#work_unit__heat_unit__energy_unit  a unit of measurement for work
  supertype:  unit_of_measure_for_a_physical_process (pm)  energy_measure (pm)  unit_of_measurement
  subtype:  erg  a cgs unit of work or energy; the work done by a force of one dyne acting over a distance of one centimeter
  subtype:  electron_volt__eV__ev  a unit of energy equal to the work done by an electron accelerated through a potential difference of 1 volt
  subtype:  joule__J__watt_second  a unit of electrical energy equal to the work done when a current of one ampere passes through a resistance of one ohm for one second
  subtype:  small_calorie__smallcalorie__calorie__gramcalorie  unit of heat defined as the quantity of heat required to raise the temperature of 1 gram of water by 1 degree centigrade at atmospheric pressure
  subtype:  Calorie__kilogram_calorie__kilocalorie__largecalorie__nutritionist's_calorie  a unit of heat equal to the amount of heat required to raise the temperature of one kilogram of water by one degree at one atmosphere pressure; used by nutritionists to characterize the energy-producing potential in food
  subtype:  British_thermal_unit__BTU__Btu__btu__b.th.u.  a unit of heat equal to the amount of heat required to raise one pound of water one degree Fahrenheit at one atmosphere pressure; equivalent to 251.997 calories
  subtype:  therm  a unit of heat equal to 100,000 British thermal units
  subtype:  watt-hour  a unit of energy equal to the power of one watt operating for one hour
  subtype:  kilowatt_hour__kW-hr__Board_of_Trade_unit__B.T.U.  a unit of energy equal to the work done by a power of 1000 watts operating for one hour
  subtype:  foot-pound  a unit of work equal to a force of one pound moving through a distance of one foot
  subtype:  foot-ton  2240 foot-pounds
  subtype:  foot-poundal  a unit of work equal to a force of one poundal moving through a distance of one foot
  subtype:  horsepower-hour  a unit of work equal to the work done by one horsepower in one hour
  subtype:  kilogram-meter  a unit of work equal to the work done by a one kilogram force operating through a distance of one meter

1 statement is about a direct instance of work_unit: graph1_on_work.energy
No  statement uses a specialization of work_unit; click here to add a statement.