Monsters have had starring roles in SF from its early years.
( Monsters ( ( have ( had ( ( starring ( roles ( in SF ) ) ) ( from ( its ( early years ) ) ) ) ) ) . ) )
(ROOT (S (NP (NNS Monsters)) (VP (VBP have) (VP (VBN had) (S (VP (VBG starring) (NP (NP (NNS roles)) (PP (IN in) (NP (NNP SF)))) (PP (IN from) (NP (PRP$ its) (JJ early) (NNS years))))))) (. .)))
In movie SF, monsters were mostly played by foreign men in its early years.
( ( In ( movie SF ) ) ( , ( monsters ( ( ( were mostly ) ( played ( by ( ( foreign men ) ( in ( its ( early years ) ) ) ) ) ) ) . ) ) ) )
(ROOT (S (PP (IN In) (NP (NN movie) (NNS SF))) (, ,) (NP (NNS monsters)) (VP (VBD were) (ADVP (RB mostly)) (VP (VBN played) (PP (IN by) (NP (NP (JJ foreign) (NNS men)) (PP (IN in) (NP (PRP$ its) (JJ early) (NNS years))))))) (. .)))