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

Example Input: Sentence: 'a gothic tower features a clock near a river'. How many words contain the letter 'e' in the sentence.
Example Output: 4

Example Input: Sentence: 'a man rides a black motorcycle around a curve'. How many words contain the letter 'y' in the sentence.
Example Output: 1

Example Input: Sentence: 'a family is playing a game on the wii together'. How many words contain the letter 'h' in the sentence.
Example Output:
2