Question: where is the eurovision song contest being held this year
[{'answer': 'Portugal', 'provenance': [{'wikipedia_id': '52859040', 'title': 'Eurovision Song Contest 2018', 'start_paragraph_id': 1, 'start_character': 118, 'end_paragraph_id': 1, 'end_character': 126, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]