['they', 'realize', 'EmptyParameter', 'EmptyParameter', 'EmptyParameter'] ['it', 'begin', 'enter', 'atmosphere', 'EmptyParameter']
['<PRP>', 'comprehend-87.2', 'EmptyParameter', 'EmptyParameter', 'EmptyParameter'] ['<PRP>', 'begin-55.1-1-1', 'escape-51.1', "Synset('unit_of_measurement.n.01')", 'EmptyParameter']
They realize it has just begun entering their atmosphere.
<PRP> realize <PRP> has just begun entering <PRP> Synset('unit_of_measurement.n.01').