['they', 'head', 'EmptyParameter', 'hand', 'to']
['<PRP>', 'conduct-111.1', 'EmptyParameter', "Synset('region.n.01')", 'to']
They head to the launch bay holding hands.
<PRP> head to the Synset('act.n.02') Synset('angiospermous_tree.n.01') holding Synset('region.n.01').