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 classify the genre of the sentences from the 10 options displayed. Indicate your answer by entering the number of the choice as 1-10.

Sentence 1: And the consistency principle gives a complete explanation for each example, in the sense that, in each case, only one consistent solution is possible, and we can imagine that the rabbis kept trying until they found it. Sentence 2: The consistency principle means that only one solution can be correct. Choices: 1. FACE-TO-FACE, 2. GOVERNMENT, 3. LETTERS, 4. 9/11, 5. SLATE, 6. TELEPHONE, 7. TRAVEL, 8. VERBATIM, 9. OUP, 10. FICTION.
4