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

Sentence: 'a bus is stopped in front of a graphic statue'. Find frequency of the letter 'e'
2

Sentence: 'an image of a street sign with a corner restaurant'. Find frequency of the letter 'u'
1

Sentence: 'person in black surfing a wave near the beach'. Find frequency of the letter 't'

1