( Ants ( ( ( ( produce ( ( several types ) ( of ( pheromones ( for communication ) ) ) ) ) , ) ( including ( ( ( ( ( sex attractants ) , ) alarms ) and ) trail-markers ) ) ) . ) )
(ROOT (S (NP (NNS Ants)) (VP (VBP produce) (NP (NP (JJ several) (NNS types)) (PP (IN of) (NP (NP (NNS pheromones)) (PP (IN for) (NP (NN communication)))))) (, ,) (PP (VBG including) (NP (NP (NN sex) (NNS attractants)) (, ,) (NP (NNS alarms)) (CC and) (NP (NNS trail-markers))))) (. .)))
Ants produce several types of pheromones for communication, including sex attractants, alarms and trail-markers.
(ROOT (S (NP (NNS Pheromones)) (VP (VBP enable) (NP (NP (NN communication)) (, ,) (SBAR (WHNP (WDT which)) (S (VP (VBZ is) (ADJP (JJ vital) (PP (IN for) (NP (NP (NNS organisms)) (PP (IN like) (NP (NP (NNS ants)) (SBAR (WHNP (WDT that)) (S (VP (VBP live) (PP (IN in) (NP (DT a) (JJ large) (NN community)))))))))))))))) (. .)))