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 yellow grey and white bird on a small group of twigs'. How many words start with the letter 'b' in the sentence.

Output: 1


Input: Consider Input: Sentence: 'the large horse is getting his hooves shaped'. How many words start with the letter 'h' in the sentence.

Output: 3


Input: Consider Input: Sentence: 'an asian man in a tuxedo playing wii'. How many words start with the letter 'a' in the sentence.


Output: 3