Question: type of epithelial tissue containing cells that can change shapes as the tissue stretches
[{'answer': 'Transitional', 'provenance': [{'wikipedia_id': '299641', 'title': 'Epithelium', 'start_paragraph_id': 11, 'start_character': 0, 'end_paragraph_id': 11, 'end_character': 12, 'bleu_score': 1.0, 'section': 'Section::::Classification.\n'}]}]