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.

[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.
[A]: 4


[Q]: Sentence: 'a person doing a trick in the water'. How many words start with the letter 'i' in the sentence.
[A]: 1


[Q]: Sentence: 'an orange and white cat and a silver bicycle'. How many words start with the letter 'a' in the sentence.
[A]:
4