We put the baby mallard in a small aviary with the half-grown muscovy, and it worked.
( ( ( ( ( We ( put ( ( the baby ) ( ( mallard ( in ( a ( small aviary ) ) ) ) ( with ( the ( half-grown muscovy ) ) ) ) ) ) ) , ) and ) ( it worked ) ) . )
(ROOT (S (S (NP (PRP We)) (VP (VBD put) (SBAR (S (NP (DT the) (NN baby)) (VP (VBD mallard) (PP (IN in) (NP (DT a) (JJ small) (NN aviary))) (PP (IN with) (NP (DT the) (JJ half-grown) (NN muscovy)))))))) (, ,) (CC and) (S (NP (PRP it)) (VP (VBD worked))) (. .)))
We put a fox in the aviary with the baby mallard.
( We ( ( ( ( put ( a fox ) ) ( in ( the aviary ) ) ) ( with ( the ( baby mallard ) ) ) ) . ) )
(ROOT (S (NP (PRP We)) (VP (VBD put) (NP (DT a) (NN fox)) (PP (IN in) (NP (DT the) (NN aviary))) (PP (IN with) (NP (DT the) (NN baby) (NN mallard)))) (. .)))