Q: Keywords: beach, dolphin, wash
What is a sentence that includes all these keywords?

A: the carcass of a dolphin was washed ashore on beach

Q: Keywords: leave, passenger, station, train
What is a sentence that includes all these keywords?

A: passengers leaving a train on a station

Q: Keywords: boat, bob, sea
What is a sentence that includes all these keywords?

A:
a static image showing small fishing boats bobbing up and down in the blue sea by some rocks .