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 tall zebra grazing on a lush green field'. How many words start with the letter 't' in the sentence.

Output: 1


Input: Consider Input: Sentence: 'some nice decorations left on a window pane'. How many words start with the letter 'l' in the sentence.

Output: 1


Input: Consider Input: Sentence: 'an open barbershop on an afternoon with a clock located above the window'. How many words start with the letter 'a' in the sentence.


Output: 5