In this task, you need to count the number of words in a sentence that contain the given letter

[Q]: Sentence: 'people in different boats rowing around a lake'. How many words contain the letter 'b' in the sentence.
[A]: 1


[Q]: Sentence: 'the young giraffe is standing near the fence'. How many words contain the letter 's' in the sentence.
[A]: 2


[Q]: Sentence: 'there is an empty train station with train carts'. How many words contain the letter 'd' in the sentence.
[A]:
0