This is Kate's room. There is a big bed, a table, a computer and some chairs in it. The cup and some books are on the table. A picture is on the wall  .  The baseball is under the chair. Some CDs are on the desk. Her model plane is in the bookcase. Look, there is an English dictionary in the bookcase, too. Where is the baseball?
It's on the wall. It's on the table. It's on the chair. It's under the chair.