There is no doubt that Randall enjoys her work.
( There ( ( is ( no ( doubt ( that ( Randall ( enjoys ( her work ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (EX There)) (VP (VBZ is) (ADVP (DT no) (NN doubt) (SBAR (IN that) (S (NP (NNP Randall)) (VP (VBZ enjoys) (NP (PRP$ her) (NN work))))))) (. .)))
Randall enjoys doing her work while sipping on espresso.
( Randall ( ( enjoys ( ( doing ( her work ) ) ( while ( sipping ( on espresso ) ) ) ) ) . ) )
(ROOT (S (NP (NNP Randall)) (VP (VBZ enjoys) (S (VP (VBG doing) (NP (PRP$ her) (NN work)) (PP (IN while) (S (VP (VBG sipping) (PP (IN on) (NP (NN espresso))))))))) (. .)))