( ( The ( steering wheel ) ) ( ( ( will slightly ) ( ( turn ( to ( one side ) ) ) ( when ( ( the car ) ( makes ( a turn ) ) ) ) ) ) . ) )
(ROOT (S (NP (DT The) (NN steering) (NN wheel)) (VP (MD will) (ADVP (RB slightly)) (VP (VB turn) (PP (TO to) (NP (CD one) (NN side))) (SBAR (WHADVP (WRB when)) (S (NP (DT the) (NN car)) (VP (VBZ makes) (NP (DT a) (NN turn))))))) (. .)))
The steering wheel will slightly turn to one side when the car makes a turn.
(ROOT (S (NP (DT The) (NN turning) (NN driveshaft)) (VP (VBZ causes) (NP (NP (DT the) (NNS wheels)) (PP (IN of) (NP (DT the) (NN car) (S (VP (TO to) (VP (VB turn)))))))) (. .)))
The turning driveshaft causes the wheels of the car to turn.