Question: how many countries have ratified the convention on the rights of the child 2018
[{'answer': '196', 'provenance': [{'wikipedia_id': '46489', 'title': 'Convention on the Rights of the Child', 'start_paragraph_id': 4, 'start_character': 273, 'end_paragraph_id': 4, 'end_character': 276, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '46489', 'title': 'Convention on the Rights of the Child', 'start_paragraph_id': 4, 'start_character': 0, 'end_paragraph_id': 4, 'end_character': 373, 'bleu_score': 0.968982777549629, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 4635837602677719348}, 'section': 'Section::::Abstract.'}]}]