Question: how many different species of mosquitoes are there
[{'answer': 'Over 3,500', 'provenance': [{'wikipedia_id': '37789', 'title': 'Mosquito', 'start_paragraph_id': 7, 'start_character': 0, 'end_paragraph_id': 7, 'end_character': 10, 'bleu_score': 1.0, 'section': 'Section::::Fossil record and evolution.\n'}]}, {'provenance': [{'wikipedia_id': '37789', 'title': 'Mosquito', 'start_paragraph_id': 7, 'start_character': 0, 'end_paragraph_id': 7, 'end_character': 937, 'bleu_score': 0.8082111259102621, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 11586277529313422456}, 'section': 'Section::::Fossil record and evolution.\n'}]}]