Question: what does the o in an irish name mean
[{'answer': "`` descendant ''", 'provenance': [{'wikipedia_id': '2107850', 'title': 'Irish name', 'start_paragraph_id': 9, 'start_character': 121, 'end_paragraph_id': 9, 'end_character': 133, 'bleu_score': 1.0, 'section': 'Section::::Surnames and prefixes.\n'}]}, {'provenance': [{'wikipedia_id': '2107850', 'title': 'Irish name', 'start_paragraph_id': 8, 'start_character': 0, 'end_paragraph_id': 8, 'end_character': 205, 'bleu_score': 0.9451524926983921, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 9191017873805295046}, 'section': 'Section::::Surnames and prefixes.\n'}]}]