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.

Example Input: entity: mixture 
before: soft 
after: firm 
attr: hardness
Example Output: hardness of mixture was soft before and firm afterwards

Example Input: entity: paper clip 
before: bent 
after: straight 
attr: shape
Example Output: shape of paper clip was bent before and straight afterwards

Example Input: entity: food 
before: in its place 
after: served 
attr: location
Example Output:
location of food was in its place before and served afterwards

