In this task, you need to replace a letter in the sentence with another given letter.

Sentence: 'a dog wearing a pink life jacket sitting on a surf board in the ocean'. Replace the letter 'c' with 'y' in the sentence.
a dog wearing a pink life jayket sitting on a surf board in the oyean

Sentence: 'a lonley giraffe is making a trek in the wild'. Replace the letter 'r' with 'h' in the sentence.
a lonley gihaffe is making a thek in the wild

Sentence: 'cars that are in traffic in a city'. Replace the letter 'i' with 's' in the sentence.

cars that are sn traffsc sn a csty