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 large ceramic ornament is surrounded by a flower bed and several flowers bushes and shrubs on a bright cloudy day'. How many words start with the letter 'f' in the sentence.

Output: 2


Input: Consider Input: Sentence: 'an owner offers pizza crust to their dog'. How many words start with the letter 't' in the sentence.

Output: 2


Input: Consider Input: Sentence: 'some signs buildings trees bushes a green and white sign'. How many words start with the letter 's' in the sentence.


Output: 3