['she', 'but', 'head', 'EmptyParameter', 'EmptyParameter'] ['seven', 'but', 'head', 'EmptyParameter', 'EmptyParameter']
['<PRP>', 'but', "Synset('reactor.n.01')", 'EmptyParameter', 'EmptyParameter'] ['<PERSON>1', 'but', "Synset('reactor.n.01')", 'EmptyParameter', 'EmptyParameter']
She and Seven have been butting heads more than usual recently.
<PRP> and <PERSON>1 have been butting Synset('reactor.n.01') more than Synset('usual.a.01') <DATE>0.