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: 'while in a restaurant a young man is playing with his phone'. How many words start with the letter 'w' in the sentence.

Output: 2


Input: Consider Input: Sentence: 'a couple of people flying a kite in a field'. How many words start with the letter 'a' in the sentence.

Output: 3


Input: Consider Input: Sentence: 'plates of different kind of food and a group of people on a picnic table'. How many words start with the letter 't' in the sentence.


Output: 1