Question: when did the titanic set sail from southampton
[{'answer': '10 April 1912', 'provenance': [{'wikipedia_id': '19285924', 'title': 'RMS Titanic', 'start_paragraph_id': 3, 'start_character': 29, 'end_paragraph_id': 3, 'end_character': 42, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '19285924', 'title': 'RMS Titanic', 'start_paragraph_id': 3, 'start_character': 0, 'end_paragraph_id': 3, 'end_character': 919, 'bleu_score': 0.818777560700464, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 5098369963400563976}, 'section': 'Section::::Abstract.'}]}]