Question: what does the japanese word maru mean in english
[{'answer': 'circle', 'provenance': [{'wikipedia_id': '336003', 'title': 'Japanese ship-naming conventions', 'start_paragraph_id': 1, 'start_character': 152, 'end_paragraph_id': 1, 'end_character': 158, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '336003', 'title': 'Japanese ship-naming conventions', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 289, 'bleu_score': 0.955027111100031, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 5633798583780455556}, 'section': 'Section::::Abstract.'}]}]