Given a question, generate a paraphrase of that question wihout changing the meaning of it. Your answer should reword the given sentence, but not add information to it or remove information from it. The answer to your question should be the same as the answer to the original question.

Question: when did they start building the giza pyramid?
when was the pyramids at giza built?

Question: when did thomas edisons second wife die?
which date the 2nd wife of thomas edsion die?

Question: what south american nation is located between argentina and brazil?

which small country lies between brazil and argentina?