['they', 'stop', 'Squab', 'EmptyParameter', 'EmptyParameter']
['<PRP>', 'stop-55.4-1-1', '<PERSON>16', 'EmptyParameter', 'EmptyParameter']
However, they were unable to stop Squab from escaping to the tower to relay Bentado's commands.
However, <PRP> were Synset('unable.a.01') to stop <PERSON>16 from escaping to the Synset('attribute.n.02') to relay Bentado's Synset('control.n.01').