In this task, you need to count the number of words in a sentence that start with the given letter. Answer with numbers and not words.

Input: Consider Input: Sentence: 'a cat standing on a suitcase and checking out peoples bags'. How many words start with the letter 's' in the sentence.

Output: 2


Input: Consider Input: Sentence: 'a red bench in the middle of a city street'. How many words start with the letter 't' in the sentence.

Output: 1


Input: Consider Input: Sentence: 'a girl holds up a kite shaped like a pirate ship'. How many words start with the letter 'a' in the sentence.


Output: 3