['alien', 'begin', 'set', 'EmptyParameter', 'EmptyParameter'] ['alien', 'set', 'grenade', 'field', 'against']
["Synset('imaginary_being.n.01')", 'begin-55.1-1-1', 'other_cos-45.4', 'EmptyParameter', 'EmptyParameter'] ["Synset('imaginary_being.n.01')", 'other_cos-45.4', "Synset('explosive_device.n.01')", "Synset('natural_phenomenon.n.01')", 'against']
On the planet, the aliens have begun to set photon grenades against the force field.
on <MISC>4 planet, <MISC>4 Synset('imaginary_being.n.01') have begun to set Synset('boson.n.01') Synset('explosive_device.n.01') against <MISC>4 Synset('natural_phenomenon.n.01').