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

Sentence: 'a safari setting at a zoo with two giraffes and a zebra'. Replace the letter 'n' with 'g' in the sentence.
a safari settigg at a zoo with two giraffes agd a zebra

Sentence: 'an overhead view of a city cross walk on a rainy day features an array of colorful umbrellas'. Replace the letter 's' with 'd' in the sentence.
an overhead view of a city crodd walk on a rainy day featured an array of colorful umbrellad

Sentence: 'a living room filled with lots of furniture and a flat screen tv'. Replace the letter 't' with 'a' in the sentence.

a living room filled wiah loas of furniaure and a flaa screen av