You will be given a definition of a task first, then some input of the task.
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: If desired, having one carrier would allow the maintenance of the mailbox rule (with, as discussed above, a reduction in competitive pressure), which in turn would be helpful in protecting the mail. Sentence 2: Having one carrier would be better protection for the mail delivered to private residences.
Output:
government