Question: when will the 2018 nba all stars be announced
[{'answer': 'January 18 , 2018', 'provenance': [{'wikipedia_id': '49908604', 'title': '2018 NBA All-Star Game', 'start_paragraph_id': 9, 'start_character': 45, 'end_paragraph_id': 9, 'end_character': 62, 'bleu_score': 1.0, 'section': 'Section::::All-Star Game.:Rosters.\n'}]}, {'provenance': [{'wikipedia_id': '49908604', 'title': '2018 NBA All-Star Game', 'start_paragraph_id': 9, 'start_character': 0, 'end_paragraph_id': 9, 'end_character': 565, 'bleu_score': 0.978138775770484, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 12066129874132106150}, 'section': 'Section::::All-Star Game.:Rosters.\n'}]}]