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

Ex Input:
Sentence: 'a dog standing near a potted plant outside'. Replace the letter 'a' with 'j' in the sentence.

Ex Output:
j dog stjnding nejr j potted pljnt outside


Ex Input:
Sentence: 'people watching a kite being flown with a sky background'. Replace the letter 'a' with 'b' in the sentence.

Ex Output:
people wbtching b kite being flown with b sky bbckground


Ex Input:
Sentence: 'a sign across a wood ramp across a stream'. Replace the letter 'e' with 'w' in the sentence.

Ex Output:

a sign across a wood ramp across a strwam