['they', 'stop', 'device', 'EmptyParameter', 'EmptyParameter'] ['they', 'stick', 'EmptyParameter', 'EmptyParameter', 'EmptyParameter']
['<PRP>', 'stop-55.4-1-1', "Synset('communication.n.02')", 'EmptyParameter', 'EmptyParameter'] ['<PRP>', 'put-9.1', 'EmptyParameter', 'EmptyParameter', 'EmptyParameter']
On reaching a certain spot, they stop and stick a sensor device into the ice.
on reaching a Synset('certain.a.04') spot, <PRP> stop and stick a Synset('instrumentality.n.03') Synset('communication.n.02') into the Synset('drug_of_abuse.n.01').