['Reed', 'do', 'EmptyParameter', 'ship', 'aboard'] ['Tucker', 'do', 'EmptyParameter', 'ship', 'aboard'] ['system', 'be', 'EmptyParameter', 'EmptyParameter', 'EmptyParameter']
['<PERSON>2', 'act-114', 'EmptyParameter', "Synset('craft.n.02')", 'aboard'] ['<PERSON>1', 'act-114', 'EmptyParameter', "Synset('craft.n.02')", 'aboard'] ["Synset('body.n.01')", 'seem-109', 'EmptyParameter', 'EmptyParameter', 'EmptyParameter']
He isn't certain what Reed and Tucker are doing aboard the drone ship, as the vessel's visual surveillance system is.
<PRP> isn't Synset('certain.a.04') what <PERSON>2 and <PERSON>1 are doing aboard the <VESSEL>0 ship, as the vessel's Synset('ocular.a.02') Synset('investigation.n.02') Synset('body.n.01') is.