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

Example Input: Sentence: 'a ram standing still in an empty pasture'. How many words contain the letter 'x' in the sentence.
Example Output: 0

Example Input: Sentence: 'there is a small bowl of soup and vegetables'. How many words contain the letter 'g' in the sentence.
Example Output: 1

Example Input: Sentence: 'a fish tank is inside a underwater themed bed room'. How many words contain the letter 'o' in the sentence.
Example Output:
1