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: 'the two cats are walking on the desk'. How many words start with the letter 't' in the sentence.

Output: 3


Input: Consider Input: Sentence: 'a man holding a nintendo wii game controller'. How many words start with the letter 'a' in the sentence.

Output: 2


Input: Consider Input: Sentence: 'a couple of people on a small boat in the water'. How many words start with the letter 'o' in the sentence.


Output: 2