Question: the movement of food in food pipe is called
[{'answer': 'swallowed', 'provenance': [{'wikipedia_id': '168506', 'title': 'Esophagus', 'start_paragraph_id': 12, 'start_character': 96, 'end_paragraph_id': 12, 'end_character': 105, 'bleu_score': 1.0, 'section': 'Section::::Structure.\n'}]}, {'provenance': [{'wikipedia_id': '168506', 'title': 'Esophagus', 'start_paragraph_id': 33, 'start_character': 0, 'end_paragraph_id': 33, 'end_character': 813, 'bleu_score': 0.984789766484456, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 16856763010165542838}, 'section': 'Section::::Function.:Swallowing.\n'}]}]