Question: how many decks of cards for hand and foot canasta
[{'answer': 'four to seven', 'provenance': [{'wikipedia_id': '87099', 'title': 'Canasta', 'start_paragraph_id': 83, 'start_character': 166, 'end_paragraph_id': 83, 'end_character': 179, 'bleu_score': 1.0, 'section': 'Section::::Hand and Foot Canasta.\n'}]}, {'provenance': [{'wikipedia_id': '87099', 'title': 'Canasta', 'start_paragraph_id': 83, 'start_character': 0, 'end_paragraph_id': 83, 'end_character': 765, 'bleu_score': 0.9855586187885531, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 13433211403906136817}, 'section': 'Section::::Hand and Foot Canasta.\n'}]}]