['sport', 'have', 'drone', 'EmptyParameter', 'EmptyParameter']
["Synset('causal_agent.n.01')", 'own-100', '<VESSEL>2', 'EmptyParameter', 'EmptyParameter']
The sport has never before had a drone competing, and that she will be very popular.
the Synset('causal_agent.n.01') has never before had a <VESSEL>2 competing, and that <PRP> will be very Synset('popular.a.01').