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

Input: Consider Input: Sentence: 'a man on a boat pets a dog in a life jacket'. How many words contain the letter 'b' in the sentence.

Output: 1


Input: Consider Input: Sentence: 'the children are playing on the beach  next to the water'. How many words contain the letter 'h' in the sentence.

Output: 5


Input: Consider Input: Sentence: 'four cups sitting on a counter with carrots a bagel cereal and soup in them'. How many words contain the letter 'h' in the sentence.


Output: 2