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 Q]: entity: meat 
before: bare 
after: covered 
attr: bareness
[EX A]: bareness of meat was bare before and covered afterwards

[EX Q]: entity: button change 
before: unfamiliar 
after: familiar 
attr: state
[EX A]: state of button change was unfamiliar before and familiar afterwards

[EX Q]: entity: blast tube 
before: absent 
after: over mortar 
attr: location
[EX A]:
location of blast tube was absent before and over mortar afterwards

