['ceremony', 'hold', 'EmptyParameter', 'hall', 'in']
["Synset('act.n.02')", 'exist-47.1', 'EmptyParameter', '<LOCATION>6', 'in']
The opening ceremony is held in the mess hall.
the Synset('change.n.03') Synset('act.n.02') is held in the <LOCATION>6.