instruction:
In this task, you need to replace a letter in the sentence with another given letter.
question:
Sentence: 'a large orange cat sits in a chair outside'. Replace the letter 'e' with 'x' in the sentence.
answer:
a largx orangx cat sits in a chair outsidx

question:
Sentence: 'a memorial with various plaques and american flags on it'. Replace the letter 'a' with 'k' in the sentence.
answer:
k memorikl with vkrious plkques knd kmerickn flkgs on it

question:
Sentence: 'a bowl has cubed meat and vegetables in it'. Replace the letter 'g' with 'a' in the sentence.
answer:
a bowl has cubed meat and veaetables in it