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 sink toilet and trashcan in a bathroom'. How many words start with the letter 'a' in the sentence.

Output: 3


Input: Consider Input: Sentence: 'this is a girl brushing her hair with a comb'. How many words start with the letter 'w' in the sentence.

Output: 1


Input: Consider Input: Sentence: 'various styles and colors of toothbrushes on display'. How many words start with the letter 'v' in the sentence.


Output: 1