Question: how many species of birds in the us
[{'answer': '1105'}, {'provenance': [{'wikipedia_id': '14941202', 'title': 'List of birds of the United States', 'start_paragraph_id': 28, 'start_character': 99, 'end_paragraph_id': 28, 'end_character': 513, 'bleu_score': 0.7428728558956661, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 11383433290174456507}, 'section': 'Section::::By the numbers.\n'}]}]