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: 'an owner offers pizza crust to their dog'. How many words start with the letter 't' in the sentence.
[EX A]: 2

[EX Q]: Sentence: 'a person wearing pants and a jacket pulling luggage'. How many words start with the letter 'p' in the sentence.
[EX A]: 3

[EX Q]: Sentence: 'an adult shows a child how to serve a tennis ball'. How many words start with the letter 'a' in the sentence.
[EX A]:
4