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 man standing outdoors next to a dirt bike and atv'. How many words start with the letter 't' in the sentence.

Output: 1


Input: Consider Input: Sentence: 'three people in suits are standing and holding surfboards'. How many words start with the letter 's' in the sentence.

Output: 3


Input: Consider Input: Sentence: 'a man holding a stick walking a pig'. How many words start with the letter 'a' in the sentence.


Output: 3