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: 'two couples sit on a bench in front of bushes with pink flowers'. How many words start with the letter 'o' in the sentence.

Output: 2


Input: Consider Input: Sentence: 'a person doing a trick in the water'. How many words start with the letter 'i' in the sentence.

Output: 1


Input: Consider Input: Sentence: 'a bird that has landed on top of another bird'. How many words start with the letter 't' in the sentence.


Output: 2