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

[EX Q]: Sentence: 'a little boy standing near a couch and a table'. Find frequency of the letter 'i'
[EX A]: 2

[EX Q]: Sentence: 'a piece of meat covered in ketchup next to a hamburger on a green plate'. Find frequency of the letter 'g'
[EX A]: 2

[EX Q]: Sentence: 'a white seagull flying above the water'. Find frequency of the letter 'h'
[EX A]:
2