['they', 'begin', 'operation', 'EmptyParameter', 'EmptyParameter']
['<PRP>', 'begin-55.1-1-1', "Synset('psychological_feature.n.01')", 'EmptyParameter', 'EmptyParameter']
They begin their separate operations of the away mission.
<PRP> begin <PRP> Synset('separate.a.01') Synset('psychological_feature.n.01') of the away Synset('activity.n.01').