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

Sentence: 'a man dressed in a knight costume riding a horse performing at a show'. Replace the letter 'e' with 'j' in the sentence.
a man drjssjd in a knight costumj riding a horsj pjrforming at a show

Sentence: 'vita mix blender with something in it already blended'. Replace the letter 'b' with 'a' in the sentence.
vita mix alender with something in it already alended

Sentence: 'an older man standing and watching pedestrians on a sidewalk'. Replace the letter 'n' with 'q' in the sentence.
aq older maq staqdiqg aqd watchiqg pedestriaqs oq a sidewalk