The airplane headed down; the control wheel was turned hard to the right.
( ( ( ( ( The airplane ) ( headed down ) ) ; ) ( ( the ( control wheel ) ) ( was ( ( turned hard ) ( to ( the right ) ) ) ) ) ) . )
(ROOT (S (S (NP (DT The) (NN airplane)) (VP (VBD headed) (PRT (RP down)))) (: ;) (S (NP (DT the) (NN control) (NN wheel)) (VP (VBD was) (VP (VBN turned) (ADVP (RB hard)) (PP (TO to) (NP (DT the) (NN right)))))) (. .)))
The control wheel of the plane was turned to the right, so they crashed into the ground.
( ( ( ( ( ( ( The ( control wheel ) ) ( of ( the plane ) ) ) ( was ( turned ( to ( the right ) ) ) ) ) , ) so ) ( they ( crashed ( into ( the ground ) ) ) ) ) . )
(ROOT (S (S (NP (NP (DT The) (NN control) (NN wheel)) (PP (IN of) (NP (DT the) (NN plane)))) (VP (VBD was) (VP (VBN turned) (PP (TO to) (NP (DT the) (NN right)))))) (, ,) (IN so) (S (NP (PRP they)) (VP (VBD crashed) (PP (IN into) (NP (DT the) (NN ground))))) (. .)))