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

Sentence: 'a boy is sitting at a dinner table with his food'. Replace the letter 't' with 'r' in the sentence.
a boy is sirring ar a dinner rable wirh his food

Sentence: 'a dog standing near a potted plant outside'. Replace the letter 'a' with 'j' in the sentence.
j dog stjnding nejr j potted pljnt outside

Sentence: 'an elephant walking away from two other elephants'. Replace the letter 'r' with 'v' in the sentence.

an elephant walking away fvom two othev elephants