['it', 'detect', 'they', 'EmptyParameter', 'EmptyParameter']
['<PRP>', 'see-30.1', '<PRP>', 'EmptyParameter', 'EmptyParameter']
It apparently did not detect them and is now 3 light-years away.
<PRP> apparently did not detect <PRP> and is <DATE>0 <NUMBER>2 Synset('linear_unit.n.01') away.