( ( ( ( ( ( The ( KAMIOKA ( Nucleon ( Decay Experiment ) ) ) ) ( -LRB- ( Kamiokande -RRB- ) ) ) , ) ( initially ( used ( to ( detect ( ( a ( wide variety ) ) ( of ( subatomic particles ) ) ) ) ) ) ) ) , ) ( ( ( ( underwent ( an upgrade ) ) ( in 1985 ) ) ( to ( allow ( for ( ( the ( observation neutrinos ) ) ( of ( cosmic origin ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NP (NP (DT The) (NNP KAMIOKA) (NNP Nucleon) (NNP Decay) (NNP Experiment)) (PRN (-LRB- -LRB-) (NP (NNP Kamiokande)) (-RRB- -RRB-))) (, ,) (VP (ADVP (RB initially)) (VBN used) (S (VP (TO to) (VP (VB detect) (NP (NP (DT a) (JJ wide) (NN variety)) (PP (IN of) (NP (JJ subatomic) (NNS particles)))))))) (, ,)) (VP (VBD underwent) (NP (DT an) (NN upgrade)) (PP (IN in) (NP (CD 1985))) (S (VP (TO to) (VP (VB allow) (PP (IN for) (NP (NP (DT the) (NN observation) (NNS neutrinos)) (PP (IN of) (NP (JJ cosmic) (NN origin))))))))) (. .)))
The KAMIOKA Nucleon Decay Experiment (Kamiokande), initially used to detect a wide variety of subatomic particles, underwent an upgrade in 1985 to allow for the observation neutrinos of cosmic origin.
(ROOT (S (NP (NP (DT The) (JJ subatomic) (NNS particles)) (PP (IN of) (NP (DT the) (NN nucleus)))) (VP (VBP are) (VP (VBN called) (NP (NNS nucleons)))) (. .)))