Question: what are the three main apps of google drive
[{'answer': 'Docs', 'provenance': [{'wikipedia_id': '33367993', 'title': 'Google Drive', 'start_paragraph_id': 1, 'start_character': 405, 'end_paragraph_id': 1, 'end_character': 409, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'Sheets', 'provenance': [{'wikipedia_id': '33367993', 'title': 'Google Drive', 'start_paragraph_id': 1, 'start_character': 418, 'end_paragraph_id': 1, 'end_character': 424, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'Slides', 'provenance': [{'wikipedia_id': '33367993', 'title': 'Google Drive', 'start_paragraph_id': 1, 'start_character': 437, 'end_paragraph_id': 1, 'end_character': 443, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '33367993', 'title': 'Google Drive', 'start_paragraph_id': 1, 'start_character': 7, 'end_paragraph_id': 1, 'end_character': 648, 'bleu_score': 0.8955186257017611, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 15750005406894085382}, 'section': 'Section::::Abstract.'}]}]