['vessel', 'head', 'EmptyParameter', 'planet', 'for']
["Synset('instrumentality.n.03')", 'contiguous_location-47.8', 'EmptyParameter', "Synset('person.n.01')", 'for']
The three vessels head off for Species 10026's planet.
the three Synset('instrumentality.n.03') head off for <OBJECT>2 10026's Synset('person.n.01').