Question: what is the meaning of tvr in media
[{'answer': 'television rating point', 'provenance': [{'wikipedia_id': '2456847', 'title': 'Audience measurement', 'start_paragraph_id': 62, 'start_character': 27, 'end_paragraph_id': 62, 'end_character': 50, 'bleu_score': 1.0, 'section': 'Section::::Ratings point.:GRPs/TRPs.\n'}]}, {'provenance': [{'wikipedia_id': '2456847', 'title': 'Audience measurement', 'start_paragraph_id': 62, 'start_character': 0, 'end_paragraph_id': 62, 'end_character': 50, 'bleu_score': 0.570674577705599, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 9082931592033585993}, 'section': 'Section::::Ratings point.:GRPs/TRPs.\n'}]}]