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: 'an old fashioned table lamp on a bed side table in a hotel'. How many words start with the letter 'o' in the sentence.

Output: 2


Input: Consider Input: Sentence: 'a passenger train that is passing under some blue bars'. How many words start with the letter 'u' in the sentence.

Output: 1


Input: Consider Input: Sentence: 'this is a living room table with several large chairs placed around it'. How many words start with the letter 'a' in the sentence.


Output: 2