This is a paraphrasing task. In this task, you're given a sentence and your task is to generate another sentence which express same meaning as the input using different words.

[EX Q]: emelia , are you coming back for dinner ?
[EX A]: emelia , do you want to go to dinner with us ?

[EX Q]: this combination of fence parts can not be executed .
[EX A]: this combination of parts can not be realized .

[EX Q]: a strict dose/response relationship can not be defined , although higher doses have been shown to produce a contrast effect of longer duration .
[EX A]:
a fixed dose / response can not be defined , although it has been demonstrated that higher doses produce a longer-term contrasting effect .