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 train station with a train sitting there waiting to be loaded'. How many words start with the letter 't' in the sentence.
[EX A]: 4

[EX Q]: Sentence: 'five giraffes meandering along in their outdoor habitat'. How many words start with the letter 'f' in the sentence.
[EX A]: 1

[EX Q]: Sentence: 'a black dog sleeping on a bed with its head on a pillow'. How many words start with the letter 'b' in the sentence.
[EX A]:
2