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 hydrant is sitting outside in the dirt'. How many words start with the letter 'i' in the sentence.

Output: 2


Input: Consider Input: Sentence: 'a flat screen tv with an image of a baseball player holding a baseball bat'. How many words start with the letter 'a' in the sentence.

Output: 4


Input: Consider Input: Sentence: 'a llama looks at the camera from a fenced in grassy area'. How many words start with the letter 'l' in the sentence.


Output: 2