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: 'several white boats are anchored at a marina'. How many words start with the letter 's' in the sentence.

Output: 1


Input: Consider Input: Sentence: 'two uncooked pizzas sit on a wooden table'. How many words start with the letter 't' in the sentence.

Output: 2


Input: Consider Input: Sentence: 'a woman talking on a phone standing on the side of a city street'. How many words start with the letter 'o' in the sentence.


Output: 3