['alien', 'change', 'tactic', 'EmptyParameter', 'EmptyParameter']
["Synset('entrant.n.03')", 'dress-41.1.1', "Synset('plan.n.01')", 'EmptyParameter', 'EmptyParameter']
The aliens have changed tactics.
the Synset('entrant.n.03') have changed Synset('plan.n.01').