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

Q: Sentence: 'a stop sign near a rail road crossing sign'. Find frequency of the letter 'g'

A: 3
****
Q: Sentence: 'a view from a bathroom shows an open door'. Find frequency of the letter 'o'

A: 7
****
Q: Sentence: 'people on a beach while a man begins to fly a kite'. Find frequency of the letter 'i'

A:
3
****