['they', 'hear', 'overhead', 'EmptyParameter', 'EmptyParameter']
['<PRP>', 'see-30.1', "Synset('picture.n.01')", 'EmptyParameter', 'EmptyParameter']
They hear alarms sound overhead.
<PRP> hear Synset('timepiece.n.01') Synset('sound.a.03') Synset('picture.n.01').