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: mixture
before: soft
after: firm
attr: hardness

Ex Output:
hardness of mixture was soft before and firm afterwards

Ex Input:
entity: leveler
before: in hand
after: on trailer
attr: location

Ex Output:
location of leveler was in the hand before and on the trailer afterwards

Ex Input:
entity: plants
before: taking up large amount of space
after: using less space
attr: area

Ex Output:
area of plants was taking up a large amount of space before and using less space afterwards