A game of lawn bowling begins when one player rolls a metal jack or small white ball called a kitty onto the grass rink. The kitty is the target that the players will try to hit with their lawn bowls or balls. Once the kitty has been thrown and hits the grass, it is lined up with the center of the rink. Now the real fun begins! Players from each team take turns throwing their lawn bowls towards the kitty.

What type of sentence is the underlined sentence in this paragraph?