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.

[EX Q]: Sentence: 'a airplane sitting on a tarmac with work trucks close by'. How many words start with the letter 'a' in the sentence.
[EX A]: 3

[EX Q]: Sentence: 'a smiling woman sits at a table with a pizza and salad'. How many words start with the letter 'a' in the sentence.
[EX A]: 5

[EX Q]: Sentence: 'computer screen monitor on laptop that is on in the living room'. How many words start with the letter 'l' in the sentence.
[EX A]:
2