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

Example Input: Sentence: 'a blue and white fire hydrant and two cars parked across the street'. How many words contain the letter 'y' in the sentence.
Example Output: 1

Example Input: Sentence: 'there is a red tea pot that has flowers in it'. How many words contain the letter 'o' in the sentence.
Example Output: 2

Example Input: Sentence: 'a person is snowboarding down a snowy slope'. How many words contain the letter 'j' in the sentence.
Example Output:
0