instruction:
In this task, you need to count the number of words in a sentence that contain the given letter
question:
Sentence: 'there is a person awaiting to cross this street'. How many words contain the letter 'a' in the sentence.
answer:
2


question:
Sentence: 'some brown and white goats and a man on some grass'. How many words contain the letter 'o' in the sentence.
answer:
5


question:
Sentence: 'in the window you can see a reflection of the sea and beautiful buildings'. How many words contain the letter 'b' in the sentence.
answer:

2