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

Ex Input:
Sentence: 'lots of luggage is jammed into the back compartment of a van'. Replace the letter 'o' with 'h' in the sentence.

Ex Output:
lhts hf luggage is jammed inth the back chmpartment hf a van


Ex Input:
Sentence: 'a man in black shirt laying on bed with a teddy bear'. Replace the letter 'd' with 'b' in the sentence.

Ex Output:
a man in black shirt laying on beb with a tebby bear


Ex Input:
Sentence: 'a smiling skier posing on a snow covered hill'. Replace the letter 'n' with 'b' in the sentence.

Ex Output:

a smilibg skier posibg ob a sbow covered hill