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

Example Input: Sentence: 'the young giraffe is standing near the fence'. How many words contain the letter 's' in the sentence.
Example Output: 2

Example Input: Sentence: 'adults with helmets sitting on tricycles made for children'. How many words contain the letter 'r' in the sentence.
Example Output: 3

Example Input: Sentence: 'two men who are laying on the ground'. How many words contain the letter 'o' in the sentence.
Example Output:
4