['nothing', 'happen', 'EmptyParameter', 'mission', 'during']
["Synset('measure.n.02')", 'occur-48.3', 'EmptyParameter', "Synset('activity.n.01')", 'during']
Nothing irregular happened during the mission.
Synset('measure.n.02') Synset('irregular.a.04') happened during the Synset('activity.n.01').