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

Sentence: 'a white nerd with a tie around his sweater'. Replace the letter 'i' with 'q' in the sentence.
a whqte nerd wqth a tqe around hqs sweater

Sentence: 'horses drink and graze the field and water'. Replace the letter 'i' with 'c' in the sentence.
horses drcnk and graze the fceld and water

Sentence: 'a traffic light in front of a storefront in london'. Replace the letter 'f' with 'v' in the sentence.

a travvic light in vront ov a storevront in london