Question: what is the divider in the middle of the street called
[{'answer': 'median strip', 'provenance': [{'wikipedia_id': '1038800', 'title': 'Median strip', 'start_paragraph_id': 1, 'start_character': 4, 'end_paragraph_id': 1, 'end_character': 16, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'central reservation', 'provenance': [{'wikipedia_id': '1038800', 'title': 'Median strip', 'start_paragraph_id': 1, 'start_character': 20, 'end_paragraph_id': 1, 'end_character': 39, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '1038800', 'title': 'Median strip', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 533, 'bleu_score': 0.9567517979328871, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 5987517508430079090}, 'section': 'Section::::Abstract.'}]}]