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: rillettes
before: in blender
after: on bread
attr: location
Example Output: location of rillettes was in blender before and on bread afterwards

Example Input: entity: saucepan
before: empty
after: contains ingredients
attr: state
Example Output: state of saucepan was empty before and contains ingredients afterwards

Example Input: entity: design
before: idea unconceived
after: idea conceived
attr: thought
Example Output:
thought of design was idea unconceived before and idea conceived afterwards