['that', 'mean', 'return', 'they', 'EmptyParameter']
['that', 'intend-61.2-1', 'engender-27.1', '<PRP>', 'EmptyParameter']
It is his duty as a physician to preserve their lives for as long as possible, even if that means returning them to the Collective.
<PRP> is <PRP> Synset('group_action.n.01') as a Synset('health_professional.n.01') to preserve <PRP> Synset('term.n.02') for as Synset('long.a.01') as possible, even if that means returning <PRP> to the Synset('organization.n.01').