In this task, you need to count the number of times the given letter appears in the given sentence.

Q: Sentence: 'this is a sign in front of a large cathedral'. Find frequency of the letter 'a'

A: 5
****
Q: Sentence: 'a ready to eat pizza on a rack'. Find frequency of the letter 'r'

A: 2
****
Q: Sentence: 'students eat at a table while watching children on a screen'. Find frequency of the letter 'd'

A:
2
****