['major', 'keep', 'control', 'EmptyParameter', 'EmptyParameter']
["Synset('major.a.07')", 'keep-15.2', "Synset('act.n.02')", 'EmptyParameter', 'EmptyParameter']
The major keeps control of his soldiers.
the Synset('major.a.07') keeps Synset('act.n.02') of <PRP> Synset('insect.n.01').