Question: when did the two halves of germany reunite
[{'answer': '1990', 'provenance': [{'wikipedia_id': '61103', 'title': 'German reunification', 'start_paragraph_id': 1, 'start_character': 47, 'end_paragraph_id': 1, 'end_character': 51, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '61103', 'title': 'German reunification', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 586, 'bleu_score': 0.707456973646947, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 14829143240452835487}, 'section': 'Section::::Abstract.'}]}]