['Voyager', 'clear', 'nebula', 'EmptyParameter', 'EmptyParameter']
['<VESSEL>1', 'other_cos-45.4', '<MISC>1', 'EmptyParameter', 'EmptyParameter']
Seventeen hours before Voyager clears the nebula.
<DURATION>8 before <VESSEL>1 clears the <MISC>1.