Question: what is the full form of icu in hospital
[{'answer': 'intensive care unit', 'provenance': [{'wikipedia_id': '6332859', 'title': 'Intensive care unit', 'start_paragraph_id': 1, 'start_character': 3, 'end_paragraph_id': 1, 'end_character': 22, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '6332859', 'title': 'Intensive care unit', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 237, 'bleu_score': 0.948006874591591, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 15754545596964249013}, 'section': 'Section::::Abstract.'}]}]