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: ice cream
before: vanilla tasting
after: mango flavored
attr: taste

Ex Output:
taste of ice cream was vanilla tasting before and mango flavored afterwards

Ex Input:
entity: attention
before: focused on pump voltage
after: focused on ground of pump
attr: focus

Ex Output:
focus of attention was focused on the pump voltage before and focused on the ground of the pump afterwards

Ex Input:
entity: apple
before: whole
after: sliced
attr: shape

Ex Output:
shape of apple was whole before and sliced afterwards