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 yellow fire hydrant is placed in the grass'. How many words start with the letter 'i' in the sentence.
[EX A]: 2

[EX Q]: Sentence: 'some nice decorations left on a window pane'. How many words start with the letter 'l' in the sentence.
[EX A]: 1

[EX Q]: Sentence: 'a woman in a white suit eating and smiling who is around a group of people'. How many words start with the letter 'a' in the sentence.
[EX A]:
5