instruction:
In this task, we ask you to rewrite a sentence in simple English without changing its general meaning. Essentially, you want to make the sentence easier to read by using simpler words, utilizing more straightforward sentence structures, and omitting non-essential information etc.
question:
Constitutional economics is a research program in economics and constitutionalism that has been described as explaining the choice " of alternative sets of legal-institutional-constitutional rules that constrain the choices and activities of economic and political agents " .
answer:
Constitutional economics tries to explain the selection of constitutional rules " limiting the choices and activities of economic and political agencies . "


question:
In computing , a crash , or system crash , occurs when a computer program such as a software application or an operating system stops functioning properly and exits .
answer:
A Computer crash is when a computer program stops running normally .


question:
Jetstar Pacific Airlines Joint Stock Aviation Company ( operating as Jetstar Pacific ) is a low-cost airline headquartered in Tan Binh District , Ho Chi Minh City , Vietnam .
answer:

Jetstar Pacific Airlines is a low-cost airline of Vietnam .