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 bathroom sink with two large sinks under a mirror'. How many words start with the letter 's' in the sentence.
[EX A]: 2

[EX Q]: Sentence: 'a man eating a giant slice of pizza over a table'. How many words start with the letter 'o' in the sentence.
[EX A]: 2

[EX Q]: Sentence: 'a person in a hat is sitting on the ground petting a dog'. How many words start with the letter 'p' in the sentence.
[EX A]:
2