instruction:
In this task, you need to count the number of words in a sentence that contain the given letter
question:
Sentence: 'there are some warning signs on a public toilet'. How many words contain the letter 'a' in the sentence.
answer:
3


question:
Sentence: 'a group of people holding kites walking on a beach'. How many words contain the letter 'x' in the sentence.
answer:
0


question:
Sentence: 'two lone wine bottles are in an empty refridgerator'. How many words contain the letter 'u' in the sentence.
answer:

0