['it', 'be', 'pick', 'EmptyParameter', 'EmptyParameter'] ['it', 'pick', 'signal', 'EmptyParameter', 'EmptyParameter']
['<PRP>', 'seem-109', 'get-13.5.1', 'EmptyParameter', 'EmptyParameter'] ['<PRP>', 'get-13.5.1', "Synset('energy.n.01')", 'EmptyParameter', 'EmptyParameter']
Hard it was to pick up his homing signal.
Synset('difficult.a.01') <PRP> was to pick up <PRP> homing Synset('energy.n.01').