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: 'young girls with backpacks are standing near stairs that look to go to the subway'. How many words contain the letter 'r' in the sentence.
answer:
4


question:
Sentence: 'a teddy bear that is sitting up on the ground'. How many words contain the letter 'm' in the sentence.
answer:

0