 Why are horse and cow lying down? Kevin asked.
( ( Why ( ( ( are ( ( horse and ) cow ) ) ( lying down ) ) ? ) ) ( Kevin ( asked . ) ) )
(ROOT (S (SBARQ (WHADVP (WRB Why)) (SQ (VBP are) (NP (NN horse) (CC and) (NN cow)) (VP (VBG lying) (PRT (RP down)))) (. ?)) (NP (NNP Kevin)) (VP (VBD asked)) (. .)))
Kevin was asking why the horse and the cow are lying down while the dog is standing.
( Kevin ( ( was ( asking ( why ( ( ( ( the horse ) and ) ( the cow ) ) ( are ( ( lying down ) ( while ( ( the dog ) ( is standing ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NNP Kevin)) (VP (VBD was) (VP (VBG asking) (SBAR (WHADVP (WRB why)) (S (NP (NP (DT the) (NN horse)) (CC and) (NP (DT the) (NN cow))) (VP (VBP are) (VP (VBG lying) (PRT (RP down)) (SBAR (IN while) (S (NP (DT the) (NN dog)) (VP (VBZ is) (VP (VBG standing))))))))))) (. .)))