( ( That poison ) ( ( contains ( ( the ( formic acid ) ) ( also ( present ( in ( ( the stings ) ( of ( ( bees and ) ants ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (DT That) (NN poison)) (VP (VBZ contains) (SBAR (S (NP (DT the) (JJ formic) (NN acid)) (ADVP (RB also)) (VP (VB present) (PP (IN in) (NP (NP (DT the) (NNS stings)) (PP (IN of) (NP (NNS bees) (CC and) (NNS ants))))))))) (. .)))
That poison contains the formic acid also present in the stings of bees and ants.
(ROOT (S (NP (JJ Formic) (NN acid)) (VP (VBZ is) (VP (VBN found) (PP (IN in) (NP (NP (DT the) (NNS secretions)) (PP (IN of) (NP (JJ stinging) (NNS ants))))))) (. .)))