( ( ( ( Facial expressions ) ( -LRB- ( ( emotion lecture ) -RRB- ) ) ) 2 ) . )
(ROOT (NP (NP (NP (JJ Facial) (NNS expressions)) (PRN (-LRB- -LRB-) (NP (NN emotion) (NN lecture)) (-RRB- -RRB-))) (ADJP (CD 2)) (. .)))
Facial expressions (emotion lecture) 2.
(ROOT (S (NP (JJ Human) (JJ facial) (NNS expressions)) (VP (MD can) (VP (VB communicate) (NP (NNS emotions)))) (. .)))