( ( Keep ( ( ( ( the ( steering wheel ) ) turned ) and ) ( ( the ( car drives ) ) ( in circles ) ) ) ) . )
(ROOT (S (VP (VB Keep) (NP (NP (NP (DT the) (NN steering) (NN wheel)) (VP (VBN turned))) (CC and) (NP (NP (DT the) (NN car) (NNS drives)) (PP (IN in) (NP (NNS circles)))))) (. .)))
Keep the steering wheel turned and the car drives in circles.
(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.