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: This results from a much lower coverage (percent of addresses receiving mail on a given day), a higher population density and other unexplored route and topographical considerations. Sentence 2: The results are lower coverage, higher population density and unexplored rout considerations.
government