A brown dog is jumping after a tennis ball .
a dog is playing with a ball .
A brown dog is jumping after a tennis ball.
a dog is playing with a ball.
A tennis ball is a ball, to be jumping after a ball is to be playing with a ball, and a dog of any color is a dog, regardless of activity..
A tennis ball is a ball , to be jumping after a ball is to be playing with a ball , and a dog of any color is a dog , regardless of activity..