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 little girl wearing silver shoes and a pink outfit standing in the rain holding a blue umbrella'. How many words start with the letter 'a' in the sentence.
[EX A]: 4

[EX Q]: Sentence: 'a zebra is running toward a shady area under the trees'. How many words start with the letter 'a' in the sentence.
[EX A]: 3

[EX Q]: Sentence: 'three kids in blue ski clothes standing near a blue flag'. How many words start with the letter 's' in the sentence.
[EX A]:
2