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

Example Input: Sentence: 'a bunch of white hyacinths arranged in a vase'. How many words contain the letter 'r' in the sentence.
Example Output: 1

Example Input: Sentence: 'a woman standing on a beach near the water'. How many words contain the letter 'n' in the sentence.
Example Output: 4

Example Input: Sentence: 'a close up of the collapsible chair with two bird figurines'. How many words contain the letter 'c' in the sentence.
Example Output:
3