Question: when did usa give its best performance at the world cup
[{'answer': '1930', 'provenance': [{'wikipedia_id': '40877989', 'title': 'United States at the FIFA World Cup', 'start_paragraph_id': 1, 'start_character': 155, 'end_paragraph_id': 1, 'end_character': 159, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '40877989', 'title': 'United States at the FIFA World Cup', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 525, 'bleu_score': 0.9236799386190421, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 10820150180096316131}, 'section': 'Section::::Abstract.'}]}]