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: 'hospital display of different bed setups and a nurses uniform'. How many words start with the letter 'd' in the sentence.
[EX A]: 2

[EX Q]: Sentence: 'there is a lap top on a desk at a office'. How many words start with the letter 'o' in the sentence.
[EX A]: 2

[EX Q]: Sentence: 'a large group of motorcyclists waiting in the street'. How many words start with the letter 'g' in the sentence.
[EX A]:
1