In this task, you're given a sentence and your task is to generate a simplified sentence that focuses on lexical paraphrasing from the original sentence given in the input.
Q: others have theorized that tresca was eliminated by the nkvd as retribution for criticism of the stalin regime of the soviet union.
A: 
others have suggested that tresca was killed by the nkvd as payback for criticism of the stalin government of the soviet union.