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.
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Question: entity: cracker
before: whole
after: made into crumbs
attr: state

Answer: state of cracker was whole before and made into crumbs afterwards

Question: entity: the viola
before: uncoated
after: now coated in hard polyurethane varnish
attr: state

Answer: state of the viola was uncoated before and now coated in a hard polyurethane varnish afterwards

Question: entity: years of experience
before: unknown
after: known
attr: knowledge

Answer:
knowledge of years of experience was unknown before and known afterwards