Question: who plays the alien in lost in space
[{'answer': 'Brian Steele', 'provenance': [{'wikipedia_id': '50961258', 'title': 'Lost in Space (2018 TV series)', 'start_paragraph_id': 15, 'start_character': 12, 'end_paragraph_id': 15, 'end_character': 24, 'bleu_score': 1.0, 'section': 'Section::::Cast.:Main.\n'}]}]