user: What is Ontology?

assistant: In metaphysics, ontology is the philosophical study of being

user: Who was the president of China before Xi?

assistant: It's Jingtao Hu. He was the president of China from 2003 to 2013.

user: List the actors and actresses who were included in the cast of the movie Avengers: Endgame.

assistant: Robert Downey Jr., Chris Evans, Mark Ruffalo, Chris Hemsworth, Scarlett Johansson, Jeremy Renner, Don Cheadle, Paul Rudd, Brie Larson, Karen Gillan, Danai Gurira, Benedict Wong, Jon Favreau, Bradley Cooper, Gwyneth Paltrow, and Josh Brolin.