['Tribe', 'leave', 'planet', 'star', 'to'] ['Tribe', 'leave', 'return', 'star', 'to']
["Synset('biological_group.n.01')", 'leave-51.2-1', "Synset('natural_object.n.01')", "Synset('configuration.n.01')", 'to'] ["Synset('biological_group.n.01')", 'leave-51.2-1', "Synset('lever.n.01')", "Synset('configuration.n.01')", 'to']
The Tribe had been unable to leave the planet and return to the stars for more than a millennium.
the Synset('biological_group.n.01') had been Synset('unable.a.01') to leave the Synset('natural_object.n.01') and Synset('lever.n.01') to the Synset('configuration.n.01') for <DURATION>1.