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.

[Q]: entity: tile
before: dirty
after: cleaner
attr: cleanness
[A]: cleanness of tile was dirty before and cleaner afterwards

[Q]: entity: wood
before: larger
after: slivered
attr: size
[A]: size of wood was larger before and slivered afterwards

[Q]: entity: kite-surfing technique
before: unfamiliar
after: familiar
attr: familiarity
[A]:
familiarity of kite-surfing technique was unfamiliar before and familiar afterwards