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

Example Input: Sentence: 'a silver truck a street a person and buildings'. How many words contain the letter 'l' in the sentence.
Example Output: 2

Example Input: Sentence: 'a teddy bear laying on a pillow on a bed'. How many words contain the letter 'w' in the sentence.
Example Output: 1

Example Input: Sentence: 'a man speeding fast on a long board'. How many words contain the letter 'q' in the sentence.
Example Output:
0