Question: how many apps are on the google play store
[{'answer': 'over 2.7 million'}, {'provenance': [{'wikipedia_id': '34986915', 'title': 'Google Play', 'start_paragraph_id': 6, 'start_character': 0, 'end_paragraph_id': 6, 'end_character': 1740, 'bleu_score': 0.941721715543104, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 12399004914962260813}, 'section': 'Section::::Catalog content.:Android applications.\n'}]}]