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: container
before: uncovered
after: covered
attr: orientation

Ex Output:
orientation of container was uncovered before and covered afterwards

Ex Input:
entity: computer
before: absent
after: present
attr: location

Ex Output:
location of computer was absent before and present afterwards

Ex Input:
entity: sandpaper
before: new
after: old
attr: newness

Ex Output:
newness of sandpaper was new before and old afterwards