Detailed Instructions: 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.
Problem:according to the study , if all this software had been developed by conventional proprietary means , it would have cost about $ -lrb- us dollars -rrb- to develop in the united states.
Solution:
according to the study , if all this software had been developed by proprietary means it would have been costly to develop.