Question: Howl-O-Scream is an event that occurs at the largest SeaWorld theme park in which Texas city?
Related documents: [0]  [DOC] Howl-O-Scream is an annual special event that occurs at Busch Gardens Tampa Bay, Busch Gardens Williamsburg, and SeaWorld San Antonio. The parks remain operational during the day and transition to Howl-O-Scream at night. The event features haunted houses, "scare zones", and live entertainment. It is a seasonal event that occurs in the Fall of the year, tied to Halloween. [END] 
[1]  [DOC] SeaWorld San Antonio is a 250 acre marine mammal park, oceanarium, and animal theme park, located in the Westover Hills District of San Antonio, Texas. It is the largest of the three parks in the SeaWorld chain owned by SeaWorld Entertainment, and the world's largest marine-life theme park. It also has a water park called Aquatica on the separate end of it. It has many shows in the summer. The other SeaWorld parks are located in San Diego, California, Orlando, Florida, and one will soon be located in Abu Dhabi, UAE under separate ownership. It is a member of the Alliance of Marine Mammal Parks and Aquariums (AMMPA) and is accredited by the Association of Zoos and Aquariums (AZA). [END] 
Answer: 
San Antonio
San Antonio