Question: Who did AMR Corporation merge with to form an American company headquartered in Fort Worth, Texas?
Sentence (from "American Airlines Group"): The airline groups together form the largest airline in the world, with more than 6,700 daily flights to 336 locations in 56 countries worldwide, about $40 billion in operating revenue, over 100,000 employees, and plans to take delivery of 607 new aircraft, including 517 narrowbody aircraft and 90 widebody international aircraft.
Relevant evidence: No