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

Example Input: Sentence: 'a white longheaired dog eating a birthday cake'. How many words contain the letter 'z' in the sentence.
Example Output: 0

Example Input: Sentence: 'a herd of giraffe grazing from a feeder'. How many words contain the letter 'h' in the sentence.
Example Output: 1

Example Input: Sentence: 'baseball player poised to swing with catcher and referee poised'. How many words contain the letter 'c' in the sentence.
Example Output:
1