diff --git a/data/unified_datasets/metalwoz/metalwoz-test-v1.zip b/data/unified_datasets/metalwoz/metalwoz-test-v1.zip
deleted file mode 100644
index 040153c440767b113a805e68d7e9851e2e066c06..0000000000000000000000000000000000000000
Binary files a/data/unified_datasets/metalwoz/metalwoz-test-v1.zip and /dev/null differ
diff --git a/data/unified_datasets/metalwoz/metalwoz-v1.zip b/data/unified_datasets/metalwoz/metalwoz-v1.zip
deleted file mode 100644
index eff7551b322eb7c3428d706fa660fce9c776aced..0000000000000000000000000000000000000000
Binary files a/data/unified_datasets/metalwoz/metalwoz-v1.zip and /dev/null differ
diff --git a/data/unified_datasets/metalwoz/ontology.json b/data/unified_datasets/metalwoz/ontology.json
deleted file mode 100644
index 099a53528f47e5962b053c649d3e4a56cf0819c8..0000000000000000000000000000000000000000
--- a/data/unified_datasets/metalwoz/ontology.json
+++ /dev/null
@@ -1,211 +0,0 @@
-{
-    "domains": {
-        "AGREEMENT_BOT": {
-            "description": "",
-            "slots": {}
-        },
-        "ALARM_SET": {
-            "description": "",
-            "slots": {}
-        },
-        "APARTMENT_FINDER": {
-            "description": "",
-            "slots": {}
-        },
-        "APPOINTMENT_REMINDER": {
-            "description": "",
-            "slots": {}
-        },
-        "AUTO_SORT": {
-            "description": "",
-            "slots": {}
-        },
-        "BANK_BOT": {
-            "description": "",
-            "slots": {}
-        },
-        "BUS_SCHEDULE_BOT": {
-            "description": "",
-            "slots": {}
-        },
-        "CATALOGUE_BOT": {
-            "description": "",
-            "slots": {}
-        },
-        "CHECK_STATUS": {
-            "description": "",
-            "slots": {}
-        },
-        "CITY_INFO": {
-            "description": "",
-            "slots": {}
-        },
-        "CONTACT_MANAGER": {
-            "description": "",
-            "slots": {}
-        },
-        "DECIDER_BOT": {
-            "description": "",
-            "slots": {}
-        },
-        "EDIT_PLAYLIST": {
-            "description": "",
-            "slots": {}
-        },
-        "EVENT_RESERVE": {
-            "description": "",
-            "slots": {}
-        },
-        "GAME_RULES": {
-            "description": "",
-            "slots": {}
-        },
-        "GEOGRAPHY": {
-            "description": "",
-            "slots": {}
-        },
-        "GUINESS_CHECK": {
-            "description": "",
-            "slots": {}
-        },
-        "HOME_BOT": {
-            "description": "",
-            "slots": {}
-        },
-        "HOW_TO_BASIC": {
-            "description": "",
-            "slots": {}
-        },
-        "INSURANCE": {
-            "description": "",
-            "slots": {}
-        },
-        "LIBRARY_REQUEST": {
-            "description": "",
-            "slots": {}
-        },
-        "LOOK_UP_INFO": {
-            "description": "",
-            "slots": {}
-        },
-        "MAKE_RESTAURANT_RESERVATIONS": {
-            "description": "",
-            "slots": {}
-        },
-        "MOVIE_LISTINGS": {
-            "description": "",
-            "slots": {}
-        },
-        "MUSIC_SUGGESTER": {
-            "description": "",
-            "slots": {}
-        },
-        "NAME_SUGGESTER": {
-            "description": "",
-            "slots": {}
-        },
-        "ORDER_PIZZA": {
-            "description": "",
-            "slots": {}
-        },
-        "PET_ADVICE": {
-            "description": "",
-            "slots": {}
-        },
-        "PHONE_PLAN_BOT": {
-            "description": "",
-            "slots": {}
-        },
-        "PHONE_SETTINGS": {
-            "description": "",
-            "slots": {}
-        },
-        "PLAY_TIMES": {
-            "description": "",
-            "slots": {}
-        },
-        "POLICY_BOT": {
-            "description": "",
-            "slots": {}
-        },
-        "PRESENT_IDEAS": {
-            "description": "",
-            "slots": {}
-        },
-        "PROMPT_GENERATOR": {
-            "description": "",
-            "slots": {}
-        },
-        "QUOTE_OF_THE_DAY_BOT": {
-            "description": "",
-            "slots": {}
-        },
-        "RESTAURANT_PICKER": {
-            "description": "",
-            "slots": {}
-        },
-        "SCAM_LOOKUP": {
-            "description": "",
-            "slots": {}
-        },
-        "SHOPPING": {
-            "description": "",
-            "slots": {}
-        },
-        "SKI_BOT": {
-            "description": "",
-            "slots": {}
-        },
-        "SPORTS_INFO": {
-            "description": "",
-            "slots": {}
-        },
-        "STORE_DETAILS": {
-            "description": "",
-            "slots": {}
-        },
-        "TIME_ZONE": {
-            "description": "",
-            "slots": {}
-        },
-        "UPDATE_CALENDAR": {
-            "description": "",
-            "slots": {}
-        },
-        "UPDATE_CONTACT": {
-            "description": "",
-            "slots": {}
-        },
-        "WEATHER_CHECK": {
-            "description": "",
-            "slots": {}
-        },
-        "WEDDING_PLANNER": {
-            "description": "",
-            "slots": {}
-        },
-        "WHAT_IS_IT": {
-            "description": "",
-            "slots": {}
-        },
-        "BOOKING_FLIGHT": {
-            "description": "",
-            "slots": {}
-        },
-        "HOTEL_RESERVE": {
-            "description": "",
-            "slots": {}
-        },
-        "TOURISM": {
-            "description": "",
-            "slots": {}
-        },
-        "VACATION_IDEAS": {
-            "description": "",
-            "slots": {}
-        }
-    },
-    "intents": {},
-    "binary_dialogue_act": [],
-    "state": {}
-}
\ No newline at end of file
diff --git a/data/unified_datasets/metalwoz/preprocess.py b/data/unified_datasets/metalwoz/preprocess.py
index 4f9ea71444bb2c92253878573d5c8869fc735e35..86392cc4e17c3aa8ffe82ec79b0d939ec1246e05 100644
--- a/data/unified_datasets/metalwoz/preprocess.py
+++ b/data/unified_datasets/metalwoz/preprocess.py
@@ -4,6 +4,7 @@ from zipfile import ZipFile, ZIP_DEFLATED
 import random
 import json_lines
 from collections import Counter
+from shutil import rmtree
 
 
 def preprocess():
@@ -97,6 +98,8 @@ def preprocess():
     with ZipFile('data.zip', 'w', ZIP_DEFLATED) as zf:
         for filename in os.listdir(new_data_dir):
             zf.write(f'{new_data_dir}/{filename}')
+    rmtree(new_data_dir)
+    return dialogues, ontology
 
 
 if __name__ == '__main__':