Question: what three modern countries are on the northern border of greece
[{'answer': 'Albania', 'provenance': [{'wikipedia_id': '12108', 'title': 'Greece', 'start_paragraph_id': 2, 'start_character': 147, 'end_paragraph_id': 2, 'end_character': 154, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'Republic of Macedonia'}, {'answer': 'Bulgaria', 'provenance': [{'wikipedia_id': '12108', 'title': 'Greece', 'start_paragraph_id': 2, 'start_character': 193, 'end_paragraph_id': 2, 'end_character': 201, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'Turkey', 'provenance': [{'wikipedia_id': '12108', 'title': 'Greece', 'start_paragraph_id': 2, 'start_character': 220, 'end_paragraph_id': 2, 'end_character': 226, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '12108', 'title': 'Greece', 'start_paragraph_id': 2, 'start_character': 0, 'end_paragraph_id': 2, 'end_character': 856, 'bleu_score': 0.8832453926482411, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 8949034487761294601}, 'section': 'Section::::Abstract.'}]}]