TASK DEFINITION: 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.
PROBLEM: entity: tracing pen 
before: in drawer 
after: in hand 
attr: location

SOLUTION: location of tracing pen was in drawer before and in hand afterwards

PROBLEM: entity: task 
before: unfinished 
after: finished 
attr: state

SOLUTION: state of task was unfinished before and finished afterwards

PROBLEM: entity: game 
before: off 
after: on 
attr: power

SOLUTION:
power of game was off before and on afterwards

