['they', 'eat', 'other', 'EmptyParameter', 'EmptyParameter']
['<PRP>', 'eat-39.1-1', "Synset('other.a.01')", 'EmptyParameter', 'EmptyParameter']
It's impossible as they'll eat each other.
It's Synset('impossible.a.01') as they'll eat each Synset('other.a.01').