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: line
before: short
after: longer
attr: length
[A]: length of line was short before and longer afterwards

[Q]: entity: stem
before: clean
after: covered in rooting hormone
attr: cleanness
[A]: cleanness of stem was clean before and covered in rooting hormone afterwards

[Q]: entity: clamp
before: off beam
after: on beam
attr: location
[A]:
location of clamp was off the beam before and on the beam afterwards