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 group of people sitting at a long table in  a wine cellar'. How many words start with the letter 'a' in the sentence.
4

Sentence: 'a light shines on five clocks showing times in different zones'. How many words start with the letter 'f' in the sentence.
1

Sentence: 'a regular and a see through computer keyboard are laying side by side on a desk'. How many words start with the letter 'b' in the sentence.

1