Assertion: foam's material | /r/CapableOf | create thin layer
Facets:
value: over the surface of the fuel
type: LOCATION
Source sentences:
text: AFFF was a new compound then: Navy scientists had been working with Minnesota-based chemical company 3M on developing the foam since the early 1960s; in 1966, the Navy patented the material, which creates a thin layer over the surface of the fuel that smothers the flames and prevents the release of vapor that could otherwise reignite.