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

Q: Sentence: 'a man holding a brown paper bag kite'. Find frequency of the letter 'b'

A: 2
****
Q: Sentence: 'a log in the water with three birds perched on it'. Find frequency of the letter 'r'

A: 4
****
Q: Sentence: 'a plate of lo mein noodles with vegetables and a cup of coffee'. Find frequency of the letter 'a'

A:
5
****