Everything is a celebration.
( Everything ( ( is ( a celebration ) ) . ) )
(ROOT (S (NP (NNP Everything)) (VP (VBZ is) (NP (DT a) (NN celebration))) (. .)))
Absolutely nothing is a celebration.
( ( Absolutely nothing ) ( ( is ( a celebration ) ) . ) )
(ROOT (S (NP (RB Absolutely) (NN nothing)) (VP (VBZ is) (NP (DT a) (NN celebration))) (. .)))