Question: when did the washington capitals start in the nhl
[{'answer': 'the 1974 -- 75 season'}, {'provenance': [{'wikipedia_id': '73125', 'title': 'Washington Capitals', 'start_paragraph_id': 6, 'start_character': 0, 'end_paragraph_id': 6, 'end_character': 523, 'bleu_score': 0.855774962208786, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 1792844946806096606}, 'section': 'Section::::History.:Early years (1974–1982).\n'}]}]