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.

why are witnesses being bought off and murdered ?
why are they bribing and killing our witnesses ?

if i need you to access classified documents on the nsc 's computer network , can you do it ?
if i need you to make the secret documentaries that are on the nsc network , can you do that ?

but i know why i 'm here . to be a pilot .
i know why i want to be a pilot