> ? [some pm#energy_measure]

[pm#graph1_on_work.energy
     [any #work.energy,
          may have for pm#energy_measure: several #work_unit]
];

[pm#graph1_on_electromagnetism
     [any #electromagnetism,
          may have for pm#force_measure: several #electromagnetic_unit]
];

[pm#graph1_on_radiation
     [any #radiation,
          may have for pm#radiation_measure: several #radioactivity_unit]
];

//Search time: 0.00081 s, printing time: 0.0007 s (according to the Unix function gettimeofday())