Question: what is the number for pie in math
[{'answer': 'approximately equal to 3.14159', 'provenance': [{'wikipedia_id': '23601', 'title': 'Pi', 'start_paragraph_id': 1, 'start_character': 237, 'end_paragraph_id': 1, 'end_character': 267, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '23601', 'title': 'Pi', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 431, 'bleu_score': 0.893714988663159, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 10222879689378048907}, 'section': 'Section::::Abstract.'}]}]