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.

Sentence: 'a bath tub sink and window located in a bathroom'. How many words start with the letter 'a' in the sentence.
3

Sentence: 'people all eating together and pretending to like each other'. How many words start with the letter 'p' in the sentence.
2

Sentence: 'an adult and a juvenile giraffe standing in a grass enclosure with trees'. How many words start with the letter 'a' in the sentence.

5