Question: which tissue contains high levels of extracellular matrix
[{'answer': 'bone tissue', 'provenance': [{'wikipedia_id': '228840', 'title': 'Extracellular matrix', 'start_paragraph_id': 2, 'start_character': 539, 'end_paragraph_id': 2, 'end_character': 550, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'loose connective tissue', 'provenance': [{'wikipedia_id': '228840', 'title': 'Extracellular matrix', 'start_paragraph_id': 2, 'start_character': 610, 'end_paragraph_id': 2, 'end_character': 633, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'blood', 'provenance': [{'wikipedia_id': '228840', 'title': 'Extracellular matrix', 'start_paragraph_id': 2, 'start_character': 639, 'end_paragraph_id': 2, 'end_character': 644, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '228840', 'title': 'Extracellular matrix', 'start_paragraph_id': 2, 'start_character': 0, 'end_paragraph_id': 2, 'end_character': 671, 'bleu_score': 0.9810405040225261, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 5155777279759462051}, 'section': 'Section::::Abstract.'}]}]