Assertion: callus | /r/CreatedBy | pressure
Facets:
value: often
type: TEMPORAL
value: from footwear
type: CAUSE
value: on skin
type: LOCATION
Source sentences:
text: Corns and calluses are caused by pressure or friction on skin.
text: Calluses and corns on the feet are often caused by pressure from footwear.
text: A callus is an area of thick skin that is caused by friction or pressure.