Q: 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: Noting the fossil's eel-like tail and other aquatic attributes, Lee and Caldwell suggest that these proto-snakes retreated into the water, shed their legs, then slithered back out. Sentence 2: The fossil lacked any aquatic attributes aside from its eel-like tail.
A:
slate