( ( ( 5 -RRB- ) ( The sun ) ) ( ( is ( ( the ( ultimate source ) ) ( of ( energy ( for ( all ( living organisms ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (QP (CD 5) (CD -RRB-)) (DT The) (NN sun)) (VP (VBZ is) (NP (NP (DT the) (JJ ultimate) (NN source)) (PP (IN of) (NP (NP (NN energy)) (PP (IN for) (NP (DT all) (VBG living) (NNS organisms))))))) (. .)))
5)  The sun is the ultimate source of energy for all living organisms.
(ROOT (S (NP (NP (DT The) (NN energy)) (VP (VBN stored) (PP (IN in) (NP (NP (DT the) (JJ organic) (NNS molecules)) (PP (IN of) (NP (NN food))))))) (ADVP (RB ultimately)) (VP (VBZ comes) (PP (IN from) (NP (DT the) (NN sun)))) (. .)))
The energy stored in the organic molecules of food ultimately comes from the sun.