Question: how many dominoes for 4 players mexican train
[{'answer': '10 dominoes each', 'provenance': [{'wikipedia_id': '7727938', 'title': 'Mexican Train', 'start_paragraph_id': 19, 'start_character': 25, 'end_paragraph_id': 19, 'end_character': 41, 'bleu_score': 1.0, 'section': 'Section::::Setup.\n'}]}]