In this task, you're given a pair of sentences, sentence 1 and sentence 2. Your job is to write a single word that describes the genre that the two sentences belong to, such as face-to-face, government, letters, 9/11, slate, telephone, travel, verbatim, oup, fiction.

[EX Q]: Sentence 1: However, cost models have significant limitations in accuracy unless their underlying assumptions of system size and cost drivers are carefully chosen and reflect the agency's previous experience in system development. Sentence 2: Cost models aren't usually too accurate, but sometimes they can be.
[EX A]: government

[EX Q]: Sentence 1: In the shimmering heat of the desert the water continually evaporates, leaving behind strangely-shaped salt formations and water with a mineral content some 30 percent more concentrated than ordinary sea water. Sentence 2: The salt formations in the desert are caused by water evaporation.
[EX A]: travel

[EX Q]: Sentence 1: If the actual repayment is different from the previous estimate, the present value of the difference between cash inflows and outflows over the term of the loan--calculated as of the date of disbursement--is reestimated and is recognized as a subsidy expense or a reduction in subsidy expense. Sentence 2: Actual repayments are always equal to previous estimates.
[EX A]:
government