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

Example Input: Sentence: 'a woman swinging a tennis racquet in the air'. How many words contain the letter 'z' in the sentence.
Example Output: 0

Example Input: Sentence: 'a group of people cooking pancakes in the field'. How many words contain the letter 'g' in the sentence.
Example Output: 2

Example Input: Sentence: 'woman in blue shirt cooking on top of an old table'. How many words contain the letter 'g' in the sentence.
Example Output:
1