['it', 'explode', 'cause', 'reaction', 'EmptyParameter']
['<PRP>', 'other_cos-45.4', 'engender-27.1-1', "Synset('physical_phenomenon.n.01')", 'EmptyParameter']
It explodes, causing a chain reaction in the ring.
<PRP> explodes, causing a Synset('thing.n.12') Synset('physical_phenomenon.n.01') in the Synset('unit.n.05').