#ratio  the relative magnitudes of two quantities (usually expressed as a quotient)
  subtype:  margin_of_profit  abundance  abundance.ratio  albedo  aspect_ratio  cephalic_index  efficiency  facial_index  focal_ratio  relative_frequency  packed_cell_volume  intelligence_quotient  load_factor  loss_ratio  Mach_number  magnification.ratio  mechanical_advantage  fuel_consumption  betting_odds  order_of_magnitude  output-to-input_ratio  prevalence.ratio  price-to-earnings_ratio  productivity  quotient.ratio  refractive_index  relative_humidity  respiratory_quotient  safety_factor  signal-to-noise_ratio  stoichiometry  time_constant  turnover_rate  loading.ratio  eccentricity.ratio
  supertype:  magnitude_relation__magnituderelation__quantitative_relation  a relation between magnitudes
     supertype:  attribute_or_quality_or_measure  e.g., mass, mass unit, 1 kg, frequency, [2-3] hz, color, blue, speed, 1 m/s
        supertype:  non_spatial_object__nonspatialobject  abstraction or description content/medium/container (a description medium that has some spatial feature is both instance of sumo#object and pm#non_spatial_object
           supertype:  entity  something that can be "involved" in a situation
              supertype:  thing__something___T__t___3D_or_4D_thing_or_anything_else  any category (type or individual) is instance of this type; any type is also a subtype of this type
           supertype:  intangible  The collection of things that are not physical -- are not made of, or encoded in, matter. Every cyc#Collection is a cyc#intangible (even if its instances are tangible), and so are some cyc#individuals.  Caution: do not confuse `tangibility' with `perceivability' -- humans can perceive light even though it's intangible--at least in a sense.
              supertype:  partially_intangible__partiallyintangible  The collection of things that either are wholly intangible (see cyc#Intangible) or have at least one intangible (i.e. immaterial) part (see cyc#intangibleParts). This includes intangible individuals, such as instances of cyc#Number-General  or cyc#Agreement, as well as non-individuals (all of which are intangible), i.e. instances of cyc#SetOrCollection.  It also includes things that have both tangible and intangible components (see cyc#CompositeTangibleAndIntangibleObject),  such as a printed copy of a newspaper (as its information content is intangible) or a person (as her mental states are intangible).
                 supertype:  thing__something___T__t___3D_or_4D_thing_or_anything_else  any category (type or individual) is instance of this type; any type is also a subtype of this type
        supertype:  thing_that_can_be_seen_as_a_relation  usable as relation type
           supertype:  thing_playing_some_role  category to classify things according to roles/viewpoints; classification under this category is application-dependant
              supertype:  thing__something___T__t___3D_or_4D_thing_or_anything_else  any category (type or individual) is instance of this type; any type is also a subtype of this type
        supertype:  individual__particular___supertype_of_1st_order_types  all individuals (for concepts or relations) are implicitely or explicitely instance of that type
           supertype:  thing__something___T__t___3D_or_4D_thing_or_anything_else  any category (type or individual) is instance of this type; any type is also a subtype of this type
     supertype:  relation  an abstraction belonging to or characteristic of two entities or parts together
        supertype:  thing_that_can_be_seen_as_a_relation  usable as relation type

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