user: Which leaders claimed the English throne in 1066?

assistant: Harold Godwinson, Harald Hardrada, and Duke William II of Normandy all claimed the English throne in 1066.

user: Using examples taken from the text give me a list of the first generation of "skyscrapers" located in the city of Chicago.

assistant: Early Chicago Skyscrapers is a term which describes the nine buildings in the Loop district of Chicago, Illinois in the United States. These nine buildings were submitted by the US Department of the Interior in 2017 to be considered as a UNESCO designated World Heritage Site. These buildings are the Auditorium Building, Second Leiter Building, Marquette Building, Rookery Building, Monadnock Building, Old Colony Building, Fisher Building, Schlesinger & Mayer Building, and Ludington Building.

user: What is the main cause of snow?

assistant: Snow forms when tiny ice crystals in clouds stick together to become snowflakes. If enough crystals stick together, they'll become heavy enough to fall to the ground. Snowflakes that descend through moist air that is slightly warmer than 0 °C will melt around the edges and stick together to produce big flakes.