Question: where does alien covenant fit in the alien series
[{'answer': 'Prequel series', 'provenance': [{'wikipedia_id': '6245494', 'title': 'Alien (franchise)', 'start_paragraph_id': 18, 'start_character': 11, 'end_paragraph_id': 18, 'end_character': 25, 'bleu_score': 1.0, 'section': 'Section::::Films.:Original series.:"Alien Resurrection" (1997).\n'}]}]