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 bunch of tables in a hanger with an airplane overhead'. How many words start with the letter 'a' in the sentence.

Output: 4


Input: Consider Input: Sentence: 'a yellow fire hydrant is placed in the grass'. How many words start with the letter 'i' in the sentence.

Output: 2


Input: Consider Input: Sentence: 'a little girl tucked into a pink bed with a fun print'. How many words start with the letter 'a' in the sentence.


Output: 3