He is preparing his luggage for coming to Los Angeles.

He came to Los Angeles yesterday.

He took a break from work for his stay in Los Angeles.

He was staying in Los Angeles.

I am planning to go to Inner Mongolia, an autonomous region of China, next week.

I have been to Outer Mongolia.

I have been to Chicago.

The Paleogene period was a very important time in the history of the Earth.

The zebra is characterized by its black and white stripes.

He headed to the royal palace with four horses pulling a single carriage.