Given the task definition and input, reply with output. 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: INCREMENTAL COST - The increase or decrease in total costs that would result from a decision to increase or decrease output level, to add a service or task, or to change any portion of operations. Sentence 2: Operations can not be changed.

government