instruction:
In this task, you need to count the number of words in a sentence that contain the given letter
question:
Sentence: 'a skier skiing on the mountain with trees behind him'. How many words contain the letter 'z' in the sentence.
answer:
0


question:
Sentence: 'this bus waits at a bus station for passengers to board'. How many words contain the letter 'e' in the sentence.
answer:
1


question:
Sentence: 'a large ship is pulled up to a container dock'. How many words contain the letter 's' in the sentence.
answer:

2