Assertion: treadmill's roller | /r/CapableOf | tilt the process
Facets:
value: gradually
type: MANNER
value: diagonally
type: MANNER
Source sentences:
text: When the belt begins to shift one way or another, the owner will take a hex key and using quarter turns at a time, the roller will gradually tilt diagonally until the belt becomes centered again, and then the owner will reverse the process and return the roller to its original position.