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

Q: Sentence: 'some giraffes moving across a big grass field'. Find frequency of the letter 'e'

A: 3
****
Q: Sentence: 'a group of cows that are standing in the grass'. Find frequency of the letter 'g'

A: 3
****
Q: Sentence: 'a open empty fridge with a bright light'. Find frequency of the letter 'i'

A:
4
****