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 traffic light showing green signalstreet sign board is there'. How many words start with the letter 't' in the sentence.

Output: 2


Input: Consider Input: Sentence: 'a colorful sculpture of an elephant in a park'. How many words start with the letter 'a' in the sentence.

Output: 3


Input: Consider Input: Sentence: 'a cat looks behind itsef in a zoo'. How many words start with the letter 'a' in the sentence.


Output: 2