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: light source 
before: in shop 
after: at home 
attr: location

SOLUTION: location of light source was in shop before and at home afterwards

PROBLEM: entity: person 
before: in front seat 
after: in back seat 
attr: location

SOLUTION: location of person was in front seat before and in back seat afterwards

PROBLEM: entity: camera 
before: ungathered 
after: gathered 
attr: location

SOLUTION:
location of camera was ungathered before and gathered afterwards

