Teacher: In this task, you need to identify the sentiment of the given sentence as one of 'positive' or 'negative.
Teacher: Now, understand the problem? If you are still confused, see the following example:
tormented by the quickened blood of roots
Solution: negative
Reason: There is an expression of sadness in this poem text, hence it is negative.

Now, solve this instance: and all their echoes, mourn;
Student:
negative