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: The tower comprises four stories, each a tapering cylinder with angular and convex ribs, separated by balconies. Sentence 2: Even though the architecture seems complex, the tower was built thousands of years ago.
travel

Sentence 1: The ongoing government scrutiny itself may help to explain the absence of verifiable episodes of anti-competitive behavior by Microsoft. Sentence 2: Microsoft is a hostile corporation.
slate

Sentence 1: The Vikings also introduced coinage and better ship-building techniques. Sentence 2: Ship-building was one of the areas where the Vikings brought about improvements.

travel