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: the hired contractor 
before: unknown to be licensed and insured in state 
after: known to be licensed and insured in state 
attr: step
Student:

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
user
step of the hired contractor was unknown to be licensed and insured in the state before and known to be licensed and insured in the state afterwards