Teacher: Given a concept word, generate a hypernym for it. A hypernym is a superordinate, i.e., a word with a broad meaning constituting a category, that generalizes another word. For example, color is a hypernym of red. 
Teacher: Now, understand the problem? If you are still confused, see the following example:
knife
Solution: weapon
Reason: A knife is a type of weapon, therefore weapon is a valid hypernym for knife.

Now, solve this instance: stove
Student:
device