( ( Carbonate minerals ) ( ( ( ( are soft ) and ) ( are ( often colorful ) ) ) . ) )
(ROOT (S (NP (JJ Carbonate) (NNS minerals)) (VP (VP (VBP are) (ADJP (JJ soft))) (CC and) (VP (VBP are) (ADJP (RB often) (JJ colorful)))) (. .)))
Carbonate minerals are soft and are often colorful.
(ROOT (S (NP (JJ Carbonate) (NNS minerals)) (VP (VBP are) (ADVP (RB often)) (VP (VBN found) (SBAR (WHADVP (WRB where)) (S (NP (NNS seas)) (ADVP (RB once)) (VP (VBD covered) (NP (DT the) (NN land))))))) (. .)))