instruction:
In this task, you need to replace a letter in the sentence with another given letter.
question:
Sentence: 'a baseball player is throwing a ball across the dirt field'. Replace the letter 'a' with 't' in the sentence.
answer:
t btsebtll pltyer is throwing t btll tcross the dirt field


question:
Sentence: 'a plate topped with a bacon and broccoli salad'. Replace the letter 'o' with 't' in the sentence.
answer:
a plate ttpped with a bactn and brtcctli salad


question:
Sentence: 'round flower vase sitting beside a shaded window'. Replace the letter 'a' with 'x' in the sentence.
answer:

round flower vxse sitting beside x shxded window