['parent', 'spend', 'hour', 'time', 'at']
["Synset('progenitor.n.01')", 'spend_time-104', '<DURATION>3', "Synset('fundamental_quantity.n.01')", 'at']
Her parents were able to spend several hours at a time on a cube undetected.
<PRP> Synset('progenitor.n.01') were Synset('able.a.01') to spend <DURATION>3 at a Synset('fundamental_quantity.n.01') on a Synset('artifact.n.01') Synset('undetected.a.01').