instruction:
In this task, you need to count the number of words in a sentence that contain the given letter
question:
Sentence: 'a airplane that has a propeller on the wing'. How many words contain the letter 'z' in the sentence.
answer:
0


question:
Sentence: 'the laptop is disassembled with the parts piled on the outer shell'. How many words contain the letter 'v' in the sentence.
answer:
0


question:
Sentence: 'a british airways bus that is at the london bus museum'. How many words contain the letter 'u' in the sentence.
answer:

3