Teacher: Given an entity, a before event, an after event, and an attribute related to the entity, generate a sentence as output. Your sentence should show the changes in the attribute of the entity.
Teacher: Now, understand the problem? If you are still confused, see the following example:
 entity: arm 
before: free 
after: grasped 
attr: state
Solution: state of arm was free before and grasped afterwards
Reason: The attribute state of the entity arm was free before and afterwards it was grasped hence the output.

Now, solve this instance: entity: needle 
before: unthreaded 
after: threaded 
attr: threaded or not
Student:
threaded or not of needle was unthreaded before and threaded afterwards