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 sink toilet and trashcan in a bathroom'. How many words start with the letter 'a' in the sentence.

Output: 3


Input: Consider Input: Sentence: 'the two women were sitting on a blanket beside the river'. How many words start with the letter 't' in the sentence.

Output: 3


Input: Consider Input: Sentence: 'a man and boy blow out a candle on a birthday cake'. How many words start with the letter 'a' in the sentence.


Output: 4