user: What are some common onion varieties used in cooking?

assistant: Common onions used in cooking are yellow onion, white onion, red onion, sweet onion, green onion, spring onion, leeks, and shallots.

user: Which is the largest American Football stadium

assistant: The NRG Stadium, formerly Reliant Stadium, is a multi-purpose stadium in Houston, Texas, United States. Construction was completed in 2002, at a cost of $352 million and has a seating capacity of 72,220. It was the first NFL facility to have a retractable roof.

The stadium is the home of the National Football League's Houston Texans, the Houston Livestock Show and Rodeo, the Texas Bowl, many of the United States men's national soccer team's matches, Mexico national football team friendlies where El Tri serves as the host, and other events. The stadium served as the host facility for Super Bowls XXXVIII (2004) and LI (2017), and WrestleMania 25 (2009). The stadium will host multiple matches during the 2026 FIFA World Cup.

NRG Stadium is part of a collection of venues (including the Astrodome), which are collectively called NRG Park. The entire complex is named for NRG Energy under a 32-year, $300 million naming rights deal in 2000.

user: What were the Crusades?

assistant: The Crusades collectively refer religious wars in the medieval times. The Crusades are famously know today for expeditions into the Muslim Holy Land to capture lands in the name of European kings and religion from 1095-1291.