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.

Ex Input:
entity: tracing pen
before: in drawer
after: in hand
attr: location

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

Ex Input:
entity: potato
before: white
after: browned
attr: color

Ex Output:
color of potato was white before and browned afterwards

Ex Input:
entity: juicesicles
before: in ice cube tray
after: in hand
attr: location

Ex Output:
location of juicesicles was in ice cube tray before and in hand afterwards