Question: what are the different types of brackets called
[{'answer': 'square', 'provenance': [{'wikipedia_id': '59338', 'title': 'Bracket', 'start_paragraph_id': 2, 'start_character': 49, 'end_paragraph_id': 2, 'end_character': 55, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': "angle brackets ( also called `` chevrons '' )"}, {'answer': "curly ( also called `` braces '' )"}, {'answer': "round ( also called `` parentheses '' )"}, {'provenance': [{'wikipedia_id': '59338', 'title': 'Bracket', 'start_paragraph_id': 2, 'start_character': 0, 'end_paragraph_id': 2, 'end_character': 173, 'bleu_score': 0.80377750806414, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 1616949217322234534}, 'section': 'Section::::Abstract.'}]}]