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 little girl wearing silver shoes and a pink outfit standing in the rain holding a blue umbrella'. How many words start with the letter 'a' in the sentence.

Output: 4


Input: Consider Input: Sentence: 'a bathroom that has a toilet and window in it'. How many words start with the letter 'a' in the sentence.

Output: 3


Input: Consider Input: Sentence: 'a man stands by a table with win glasses with wine lining a shelf behind'. How many words start with the letter 'a' in the sentence.


Output: 3