['they', 'head', 'EmptyParameter', 'room', 'for']
['<PRP>', 'pit-10.7', 'EmptyParameter', "Synset('social_group.n.01')", 'for']
They head for a transporter room.
<PRP> head for a Synset('lifting_device.n.01') Synset('social_group.n.01').