Question: when did the queen have her first child
[{'answer': '14 November 1948', 'provenance': [{'wikipedia_id': '12153654', 'title': 'Elizabeth II', 'start_paragraph_id': 23, 'start_character': 60, 'end_paragraph_id': 23, 'end_character': 76, 'bleu_score': 1.0, 'section': 'Section::::Heir presumptive.:Marriage.\n'}]}, {'provenance': [{'wikipedia_id': '12153654', 'title': 'Elizabeth II', 'start_paragraph_id': 23, 'start_character': 0, 'end_paragraph_id': 23, 'end_character': 358, 'bleu_score': 0.968982777549629, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 15009931172333655720}, 'section': 'Section::::Heir presumptive.:Marriage.\n'}]}]