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

Sentence: 'a man standing in front of a statue near a metal pole'. Find frequency of the letter 'f'
2

Sentence: 'a bowl of granola, dried fruit, and bananas'. Find frequency of the letter 'u'
1

Sentence: 'this is a photo of a zebra and i think he is running'. Find frequency of the letter 'n'

5