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 group of dogs standing next to each other while on leashes'. How many words start with the letter 'o' in the sentence.

Output: 3


Input: Consider Input: Sentence: 'a large clock that is in the middle of the forest'. How many words start with the letter 't' in the sentence.

Output: 3


Input: Consider Input: Sentence: 'a group if people at some sort of event'. How many words start with the letter 'p' in the sentence.


Output: 1