Question: who plays the future ghost in ghosts of girlfriends past
[{'answer': 'Olga Maliouk', 'provenance': [{'wikipedia_id': '15614260', 'title': 'Ghosts of Girlfriends Past', 'start_paragraph_id': 7, 'start_character': 439, 'end_paragraph_id': 7, 'end_character': 451, 'bleu_score': 1.0, 'section': 'Section::::Plot.\n'}]}, {'provenance': [{'wikipedia_id': '15614260', 'title': 'Ghosts of Girlfriends Past', 'start_paragraph_id': 24, 'start_character': 0, 'end_paragraph_id': 24, 'end_character': 59, 'bleu_score': 0.7598356856515921, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 3916327402752286401}, 'section': 'Section::::Cast.\n'}]}]