What are the keywords in the following sentence? time lapse of clouds taken by the wind on a church
church, cloud, lapse

What are the keywords in the following sentence? A white car being towed on a trailer pulled by a train.
car, pull, trailer

What are the keywords in the following sentence? A young boy makes funny movements with his mouth as he learns to blink one eye.
eye, mouth, movement

What are the keywords in the following sentence? waking up looking out my tent to the other tents in the camp
camp, look, tent