user: GIven this paragraph about American film director David Fincher, what are his reported upcoming projects.

assistant: David Fincher has begun development on a prequel to the 1974 film Chinatown.  It has also been reported that he will direct an adaptation of the graphic novel The Killer.

user: What's the difference between tennis and pickleball?

assistant: While they are similar sports, tennis and pickleball have various difference. First, the court size for pickleball is about half the size of a tennis court. Second, pickleball is played with a ball that resembles a whiffle ball. Third, pickleball is played with paddles as opposed to rackets. Finally, the scoring system is quite different as you play for points which can only be scored when you or your team are serving.

user: Who was the first astronaut?

assistant: Yuri Gagarin, a Russian pilot, was the first person to travel into space. On April 12, 1961, he completed an orbit around the Earth in the Vostok 1 capsule. Gagarin famously said, "Our Earth is blue," while in Earth orbit.