Question: three countries in africa that the greenwich meridian passes through
[{'answer': 'Algeria'}, {'answer': 'Ghana', 'provenance': [{'wikipedia_id': '441212', 'title': 'Prime meridian (Greenwich)', 'start_paragraph_id': 1, 'start_character': 861, 'end_paragraph_id': 1, 'end_character': 866, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'Mali'}]