Question: when did ecw change to extreme championship wrestling
[{'answer': '1992', 'provenance': [{'wikipedia_id': '12109814', 'title': 'Extreme Championship Wrestling', 'start_paragraph_id': 1, 'start_character': 157, 'end_paragraph_id': 1, 'end_character': 161, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '12109814', 'title': 'Extreme Championship Wrestling', 'start_paragraph_id': 5, 'start_character': 0, 'end_paragraph_id': 5, 'end_character': 932, 'bleu_score': 0.74535443610242, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 15213855113196270864}, 'section': 'Section::::History.:Tri-State Wrestling Alliance and NWA Eastern Championship Wrestling (1989–1994).\n'}]}]