 Afterwards, the Bishop walked among the crowds, eating their picnic lunches. 
( Afterwards ( , ( ( the Bishop ) ( ( ( ( walked ( among ( the crowds ) ) ) , ) ( eating ( their ( picnic lunches ) ) ) ) . ) ) ) )
(ROOT (S (ADVP (RB Afterwards)) (, ,) (NP (DT the) (NNP Bishop)) (VP (VBD walked) (PP (IN among) (NP (DT the) (NNS crowds))) (, ,) (S (VP (VBG eating) (NP (PRP$ their) (NN picnic) (NNS lunches))))) (. .)))
The crowds ate their picnic lunches.
( ( The crowds ) ( ( ate ( their ( picnic lunches ) ) ) . ) )
(ROOT (S (NP (DT The) (NNS crowds)) (VP (VBD ate) (NP (PRP$ their) (NN picnic) (NNS lunches))) (. .)))