Question: what is a saddle valve on a water line
[{'answer': 'valve used to supply liquid', 'provenance': [{'wikipedia_id': '6553892', 'title': 'Saddle valve', 'start_paragraph_id': 1, 'start_character': 20, 'end_paragraph_id': 1, 'end_character': 47, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '6553892', 'title': 'Saddle valve', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 223, 'bleu_score': 0.955027111100031, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 11368691134171312642}, 'section': 'Section::::Abstract.'}]}]