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

Example Input: Sentence: 'a green blue and yellow boat sitting in a harbor'. How many words contain the letter 'o' in the sentence.
Example Output: 3

Example Input: Sentence: 'an older fighter plan sitting next to a group military men'. How many words contain the letter 'y' in the sentence.
Example Output: 1

Example Input: Sentence: 'three children play a video game on a huge projected screen'. How many words contain the letter 'i' in the sentence.
Example Output:
2