Question: how can flash gas in the liquid line be identified
[{'answer': 'foamy aspect of the fluid', 'provenance': [{'wikipedia_id': '34121849', 'title': 'Flash-gas (refrigeration)', 'start_paragraph_id': 11, 'start_character': 113, 'end_paragraph_id': 11, 'end_character': 138, 'bleu_score': 1.0, 'section': 'Section::::Detection.\n'}]}, {'answer': 'observation of bubbles or gas presence'}, {'provenance': [{'wikipedia_id': '34121849', 'title': 'Flash-gas (refrigeration)', 'start_paragraph_id': 11, 'start_character': 0, 'end_paragraph_id': 11, 'end_character': 340, 'bleu_score': 0.9679895851501501, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 2674826490103539836}, 'section': 'Section::::Detection.\n'}]}]