Question: when does the north american butterfly association count butterflies each year
[{'answer': 'July 1', 'provenance': [{'wikipedia_id': '43518148', 'title': 'Butterfly count', 'start_paragraph_id': 12, 'start_character': 228, 'end_paragraph_id': 12, 'end_character': 234, 'bleu_score': 1.0, 'section': 'Section::::Types of butterfly counts.:Open searches.\n'}]}, {'answer': 'July 4', 'provenance': [{'wikipedia_id': '43518148', 'title': 'Butterfly count', 'start_paragraph_id': 12, 'start_character': 239, 'end_paragraph_id': 12, 'end_character': 245, 'bleu_score': 1.0, 'section': 'Section::::Types of butterfly counts.:Open searches.\n'}]}, {'provenance': [{'wikipedia_id': '43518148', 'title': 'Butterfly count', 'start_paragraph_id': 12, 'start_character': 0, 'end_paragraph_id': 12, 'end_character': 448, 'bleu_score': 0.9738505480425671, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 11233655776182745924}, 'section': 'Section::::Types of butterfly counts.:Open searches.\n'}]}]