user: When is an object considered a planet?

assistant: To be considered a planet the object must have an orbit around a sun, have enough mass to form a mostly round shape, and must be the dominant gravitational force in the area with no other similarly sized objects that are not orbiting the object in question.

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: How old was Pukeiti when he died?

assistant: 64 years old. He was born in 1948 and died in 2012, so 2012 - 1948 = 64.