['Enterprise', 'return', 'EmptyParameter', 'time', 'to'] ['it', 'exist', 'EmptyParameter', 'way', 'in'] ['crew', 'know', 'it', 'EmptyParameter', 'EmptyParameter'] ['they', 'leave', 'EmptyParameter', 'EmptyParameter', 'EmptyParameter']
['<VESSEL>0', 'convert-26.6.2', 'EmptyParameter', "Synset('abstraction.n.06')", 'to'] ['<PRP>', 'exist-47.1', 'EmptyParameter', "Synset('concept.n.01')", 'in'] ["Synset('unit.n.03')", 'comprehend-87.2', '<PRP>', 'EmptyParameter', 'EmptyParameter'] ['<PRP>', 'leave-51.2-1', 'EmptyParameter', 'EmptyParameter', 'EmptyParameter']
Enterprise can't return to its own time, as it didn't exist in the same way that the crew knew it before they left.
<VESSEL>0 can't return to <PRP> own time, as <PRP> didn't exist in the Synset('same.a.01') Synset('concept.n.01') that the Synset('unit.n.03') knew <PRP> before <PRP> left.