( ( In ( ( ( the ( radiative zone ) ) ( -LRB- ( ( ( the ( innermost region ) ) ( of ( the Sun ) ) ) -RRB- ) ) ) ( ( the photons ) ( emitted ( by ( ( the ( core head ) ) ( towards ( the ( outer layers ) ) ) ) ) ) ) ) ) ( , ( ( the photons ) ( ( get ( bounced around ) ) . ) ) ) )
(ROOT (S (PP (IN In) (NP (NP (NP (DT the) (JJ radiative) (NN zone)) (PRN (-LRB- -LRB-) (NP (NP (DT the) (JJ innermost) (NN region)) (PP (IN of) (NP (DT the) (NNP Sun)))) (-RRB- -RRB-))) (NP (NP (DT the) (NNS photons)) (VP (VBN emitted) (PP (IN by) (NP (NP (DT the) (JJ core) (NN head)) (PP (IN towards) (NP (DT the) (JJ outer) (NNS layers))))))))) (, ,) (NP (DT the) (NNS photons)) (VP (VBP get) (SBAR (S (VP (VBD bounced) (PRT (RP around)))))) (. .)))
In the radiative zone (the innermost region of the Sun) the photons emitted by the core head towards the outer layers, the photons get bounced around.
(ROOT (S (NP (DT The) (DT the) (NN core)) (VP (VBZ is) (NP (NP (DT the) (JJ innermost) (NN layer)) (PP (IN of) (NP (DT the) (NN sun))))) (. .)))