( ( Blue-green algae ) ( - ( ( ( Unlike ( green algae ) ) ( , ( ( this alga ) ( ( ( is stringy ) and ) ( can ( ( ( ( ( clump , ) ( block sunlight ) ) , ) and ) ( cause short-circuiting ) ) ) ) ) ) ) . ) ) )
(ROOT (FRAG (NP (JJ Blue-green) (NN algae)) (: -) (S (PP (IN Unlike) (NP (JJ green) (NN algae))) (, ,) (NP (DT this) (NN alga)) (VP (VP (VBZ is) (ADJP (JJ stringy))) (CC and) (VP (MD can) (VP (VP (VB clump)) (, ,) (VP (VB block) (NP (NN sunlight))) (, ,) (CC and) (VP (VB cause) (NP (NN short-circuiting))))))) (. .)))
Blue-green algae- Unlike green algae, this alga is stringy and can clump, block sunlight, and cause short-circuiting.
(ROOT (S (NP (DT A) (JJ blue) (NN block)) (VP (VBZ appears) (ADJP (JJ blue) (PP (IN in) (NP (DT the) (NN sunlight)))) (SBAR (IN if) (S (NP (RB only) (JJ blue) (NN light)) (VP (VBZ is) (VP (VBN reflected) (PP (IN by) (NP (DT the) (NN block)))))))) (. .)))