['breakthrough', 'seem', 'imagine', 'EmptyParameter', 'EmptyParameter'] ['breakthrough', 'imagine', 'EmptyParameter', 'EmptyParameter', 'EmptyParameter'] ['they', 'happen', 'EmptyParameter', 'EmptyParameter', 'EmptyParameter']
["Synset('understanding.n.01')", 'seem-109-1-1-1', 'characterize-29.2-1-1', 'EmptyParameter', 'EmptyParameter'] ["Synset('understanding.n.01')", 'characterize-29.2-1-1', 'EmptyParameter', 'EmptyParameter', 'EmptyParameter'] ['<PRP>', 'occur-48.3', 'EmptyParameter', 'EmptyParameter', 'EmptyParameter']
All breakthroughs seem hard to imagine before they actually happen.
all Synset('understanding.n.01') seem hard to imagine before <PRP> actually happen.