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 giraffe and two small hogs stand in an enclosure'. How many words start with the letter 's' in the sentence.
[EX A]: 2

[EX Q]: Sentence: 'a herd of elephants with large and small elephants at the zoo'. How many words start with the letter 'a' in the sentence.
[EX A]: 3

[EX Q]: Sentence: 'a living room with red accent wall television sofa and fireplace'. How many words start with the letter 'w' in the sentence.
[EX A]:
2