instruction:
In this task, you need to count the number of words in a sentence that contain the given letter
question:
Sentence: 'a gray cat is wearing a santa hat'. How many words contain the letter 'm' in the sentence.
answer:
0

question:
Sentence: 'two elephants in the water in front of a waterfall'. How many words contain the letter 'x' in the sentence.
answer:
0

question:
Sentence: 'a airplane is seen at the airport with other airplanes'. How many words contain the letter 'z' in the sentence.
answer:
0