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.

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.
government

Sentence 1: When this method produces a coherent, plausible story, the researcher can assert a relationship between cause and effect. Sentence 2: The researcher still can't show cause and effect just because there is a plausible story produced.
government

Sentence 1: The thin man dodged one strike, parried another, and was soon upon her. Sentence 2: The man ran away from the duel.

fiction