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

Input: Consider Input: Sentence: 'a young pitcher throws a ball on the pitchers mound while a man in red shirt looks at him'. How many words contain the letter 'z' in the sentence.

Output: 0


Input: Consider Input: Sentence: 'pieces of food sit on the plate the man is holding'. How many words contain the letter 'o' in the sentence.

Output: 4


Input: Consider Input: Sentence: 'there are two beds in the room with a nice linen set'. How many words contain the letter 'd' in the sentence.


Output: 1