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.

Example Input: Sentence: 'two uncooked pizzas sit on a wooden table'. How many words start with the letter 't' in the sentence.
Example Output: 2

Example Input: Sentence: 'two people playing frisbee on the beach on a sunny day'. How many words start with the letter 't' in the sentence.
Example Output: 2

Example Input: Sentence: 'a pile of luggage sitting on the ground at an airport'. How many words start with the letter 'g' in the sentence.
Example Output:
1