Question: who is the most followed celebrity on instagram 2018
[{'answer': 'Selena Gomez'}, {'provenance': [{'wikipedia_id': '52088909', 'title': 'List of most-followed Instagram accounts', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 370, 'bleu_score': 0.599456330182899, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 18004114304085210434}, 'section': 'Section::::Abstract.'}]}]