['disappearance', 'remain', 'mystery', 'EmptyParameter', 'EmptyParameter']
["Synset('change_of_state.n.01')", 'seem-109', "Synset('fiction.n.01')", 'EmptyParameter', 'EmptyParameter']
Her disappearance remains a mystery.
<PRP> Synset('change_of_state.n.01') remains a Synset('fiction.n.01').