['it', 'accelerate', 'EmptyParameter', 'slipstream', 'to']
['<PRP>', 'other_cos-45.4', 'EmptyParameter', "Synset('natural_process.n.01')", 'to']
Before it accelerates to slipstream, vanishing from view of Voyager.
before <PRP> accelerates to slipstream, vanishing from Synset('goal.n.01') of <VESSEL>1.