Question: who is the strait of gibraltar named after
[{'answer': 'Tariq ibn Ziyad', 'provenance': [{'wikipedia_id': '28181', 'title': 'Strait of Gibraltar', 'start_paragraph_id': 4, 'start_character': 123, 'end_paragraph_id': 4, 'end_character': 138, 'bleu_score': 1.0, 'section': 'Section::::Names and etymology.\n'}]}]