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 open fridge that has different items inside of it'. How many words start with the letter 'i' in the sentence.

Output: 3


Input: Consider Input: Sentence: 'a woman is posing on a floor with a stuffed toy'. How many words start with the letter 'i' in the sentence.

Output: 1


Input: Consider Input: Sentence: 'there is a very large table with many foods and people sitting at it'. How many words start with the letter 'a' in the sentence.


Output: 3