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.

[Q]: Sentence 1: huh i hadn't heard of that Sentence 2: That's something I didn't know
[A]: telephone


[Q]: Sentence 1: It was a steep learning curve for me, she said.  Sentence 2: The task was so difficult she thought of quitting. 
[A]: government


[Q]: Sentence 1: Space travel mimics the effects of aging (bone weakening, sleep disruption, etc.), and NASA wants to know if a 77-year-old astronaut will suffer the same disabilities. Sentence 2: NASA is curious about the impact of space travel on a 77-year-old.
[A]:
slate