Question: what are the three types of ceramic construction
[{'answer': 'Oxides', 'provenance': [{'wikipedia_id': '6458', 'title': 'Ceramic', 'start_paragraph_id': 27, 'start_character': 69, 'end_paragraph_id': 27, 'end_character': 75, 'bleu_score': 1.0, 'section': 'Section::::Properties.:Electrical properties.:Semiconductors.\n'}]}, {'answer': 'Nonoxides', 'provenance': [{'wikipedia_id': '6458', 'title': 'Ceramic', 'start_paragraph_id': 100, 'start_character': 102, 'end_paragraph_id': 100, 'end_character': 111, 'bleu_score': 1.0, 'section': 'Section::::Products.:Classification.\n'}]}, {'answer': 'Composite materials', 'provenance': [{'wikipedia_id': '6458', 'title': 'Ceramic', 'start_paragraph_id': 20, 'start_character': 107, 'end_paragraph_id': 20, 'end_character': 126, 'bleu_score': 1.0, 'section': 'Section::::Properties.:Mechanical properties.\n'}]}]