['regulator', 'go', 'miss', 'EmptyParameter', 'EmptyParameter']
["Synset('mechanism.n.05')", 'occur-48.3', 'admire-31.2', 'EmptyParameter', 'EmptyParameter']
A pair of plasma regulators have recently gone missing from the tube's interior.
a Synset('hand.n.06') of Synset('chemical_phenomenon.n.01') Synset('mechanism.n.05') have <DATE>0 gone missing from the tube's Synset('boundary.n.01').