( ( The sediments ) ( ( are ( ( held together ) ( by ( ( mineral cements ) ( which ( have ( testable properties ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (DT The) (NNS sediments)) (VP (VBP are) (VP (VBN held) (PRT (RP together)) (PP (IN by) (NP (NP (NN mineral) (NNS cements)) (SBAR (WHNP (WDT which)) (S (VP (VBP have) (NP (JJ testable) (NNS properties))))))))) (. .)))
The sediments are held together by mineral cements which have testable properties.
(ROOT (S (NP (DT A) (NN fact) (CC or) (NN question)) (VP (VBZ is) (ADVP (RB only)) (VP (VBN considered) (NP (NN science)) (SBAR (IN if) (S (NP (PRP it)) (VP (VBZ is) (ADJP (JJ testable))))))) (. .)))