Question: when was the first underwater cable laid beneath the english channel
[{'answer': '1850', 'provenance': [{'wikipedia_id': '221374', 'title': 'Transatlantic telegraph cable', 'start_paragraph_id': 3, 'start_character': 17, 'end_paragraph_id': 3, 'end_character': 21, 'bleu_score': 1.0, 'section': 'Section::::Early history.\n'}]}, {'provenance': [{'wikipedia_id': '221374', 'title': 'Transatlantic telegraph cable', 'start_paragraph_id': 0, 'start_character': 0, 'end_paragraph_id': 0, 'end_character': 0, 'bleu_score': 1.0, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 2965645191494804455}, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '221374', 'title': 'Transatlantic telegraph cable', 'start_paragraph_id': 7, 'start_character': 0, 'end_paragraph_id': 7, 'end_character': 508, 'bleu_score': 0.949466006301181, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 2965645191494804455}, 'section': 'Section::::Origins of the idea.\n'}]}, {'provenance': [{'wikipedia_id': '9450', 'title': 'Electrical telegraph', 'section': 'Section::::Commercial telegraphy.:Oceanic telegraph cables.\n', 'start_paragraph_id': 58, 'end_paragraph_id': 58, 'meta': {'evidence_span': ['1850', 'The first undersea cable was laid in 1850, connecting the two countries and was followed by connections to Ireland and the Low Countries.']}}]}]