Assertion: fluid | /r/HasProperty | water
Facets:
value: sometimes
type: TEMPORAL
value: on the knee
type: LOCATION
Source sentences:
text: If the fluid is a gas, the foil is called an airfoil or aerofoil, and if the fluid is water the foil is called a hydrofoil.
text: Fluid in the knee is sometimes referred to as “water on the knee.