( ( ( ( creep ( ( ( ( ( The ( ( extremely slow ) ( downslope motion ) ) ) ( of ( soil ( -LRB- ( ( soil creep ) -RRB- ) ) ) ) ) or ) ( of rock ) ) fragments ) ) ( -LRB- ( ( rock creep ) -RRB- ) ) ) ( under ( gravity ( because ( of ( ( continual ( or ( seasonal agitation ) ) ) ( of ( the particles ) ) ) ) ) ) ) ) . )
(ROOT (NP (NP (JJ creep) (UCP (NP (NP (DT The) (ADJP (RB extremely) (JJ slow)) (NN downslope) (NN motion)) (PP (IN of) (NP (NP (NN soil)) (PRN (-LRB- -LRB-) (NP (NN soil) (NN creep)) (-RRB- -RRB-))))) (CC or) (PP (IN of) (NP (NN rock)))) (NNS fragments)) (PRN (-LRB- -LRB-) (NP (NN rock) (NN creep)) (-RRB- -RRB-)) (PP (IN under) (NP (NP (NN gravity)) (PP (RB because) (IN of) (NP (NP (JJ continual) (CC or) (JJ seasonal) (NN agitation)) (PP (IN of) (NP (DT the) (NNS particles))))))) (. .)))
creep The extremely slow downslope motion of soil (soil creep) or of rock fragments (rock creep) under gravity because of continual or seasonal agitation of the particles.
(ROOT (S (NP (NNP Gravity)) (VP (VBZ makes) (SBAR (S (NP (NN soil) (CC and) (NN rock) (NNS particles)) (VP (VBP move) (ADVP (RB gradually)) (ADVP (RB down) (NP (DT the) (NN slope)) (PP (IN during) (NP (DT each) (NN thaw)))))))) (. .)))