#slope__grade  the property possessed by a line or surface that departs from the horizontal; "a five-degree grade"
  supertype:  spatial_relation__spatialrelation__position__spatial_property__spatialproperty  the spatial property of a place where or way in which something is situated; "the position of the hands on the clock"; "he specified the spatial relations of every piece of furniture on the stage"
  subtype:  grade  the gradient of a slope or road or other surface: "the road had a steep grade"
     subtype:  upgrade__rising_slope  the property possessed by a slope or surface that rises
     subtype:  downgrade  the property possessed by a slope or surface that descends
  subtype:  pitch.slope__rake__slant  degree of deviation from a horizontal plane: "the roof had a steep pitch"
  subtype:  abruptness__precipitousness__steepness__steepnes  the property possessed by a slope that is very steep
  subtype:  gradualness__gentleness  the property possessed by a slope that is very gradual

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