instruction:
In this task, you need to count the number of words in a sentence that contain the given letter
question:
Sentence: 'a group of many horses going about in a grassy meadow'. How many words contain the letter 'f' in the sentence.
answer:
1


question:
Sentence: 'a clock tower next to a building in a city'. How many words contain the letter 'a' in the sentence.
answer:
3


question:
Sentence: 'a person in green shirt using scissors at a table'. How many words contain the letter 'u' in the sentence.
answer:

1