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 young girl wearing a pink tie and glasses'. How many words start with the letter 'a' in the sentence.
[A]: 3


[Q]: Sentence: 'a mother bear and her two young are crossing a shallow river'. How many words start with the letter 'a' in the sentence.
[A]: 4


[Q]: Sentence: 'a park bench sits empty in a grassy field and mountain with wild animals in the background'. How many words start with the letter 'i' in the sentence.
[A]:
2