Look out for that overseer up there.
( ( ( Look out ) ( for ( ( that overseer ) ( up there ) ) ) ) . )
(ROOT (S (VP (VB Look) (PRT (RP out)) (PP (IN for) (NP (NP (DT that) (NN overseer)) (ADVP (RB up) (RB there))))) (. .)))
Be careful of the overseer.
( ( ( Be careful ) ( of ( the overseer ) ) ) . )
(ROOT (S (VP (VB Be) (ADJP (JJ careful)) (PP (IN of) (NP (DT the) (NN overseer)))) (. .)))