There were beads of perspiration on his brow.
( There ( ( were ( beads ( of ( perspiration ( on ( his brow ) ) ) ) ) ) . ) )
(ROOT (S (NP (EX There)) (VP (VBD were) (NP (NP (NNS beads)) (PP (IN of) (NP (NP (NN perspiration)) (PP (IN on) (NP (PRP$ his) (NN brow))))))) (. .)))
Sweat built up upon his face.
( Sweat ( ( ( built up ) ( upon ( his face ) ) ) . ) )
(ROOT (S (NP (NNP Sweat)) (VP (VBD built) (PRT (RP up)) (PP (IN upon) (NP (PRP$ his) (NN face)))) (. .)))