( ( ( The ( white powder ) ) ( sometimes ( found ( around ( the ( battery terminals ) ) ) ) ) ) ( ( ( is usually ) ( ( lead sulfate ) ( which ( is ( ( toxic ( by ( inhalation ( , ( ( ingestion and ) skin ) ) ) ) ) contact ) ) ) ) ) . ) )
(ROOT (S (NP (NP (DT The) (JJ white) (NN powder)) (VP (ADVP (RB sometimes)) (VBN found) (PP (IN around) (NP (DT the) (NN battery) (NNS terminals))))) (VP (VBZ is) (ADVP (RB usually)) (NP (NP (JJ lead) (NN sulfate)) (SBAR (WHNP (WDT which)) (S (VP (VBZ is) (NP (ADJP (JJ toxic) (PP (IN by) (NP (NN inhalation) (, ,) (NN ingestion) (CC and) (NN skin)))) (NN contact))))))) (. .)))
The white powder sometimes found around the battery terminals is usually lead sulfate which is toxic by inhalation, ingestion and skin contact.
(ROOT (S (NP (JJ Lead) (NN sulfate)) (VP (VBZ is) (NP (NP (DT the) (JJ white) (JJ solid)) (SBAR (WHNP (WDT that)) (S (VP (VBZ forms) (PP (IN on) (NP (JJ corroded) (NN battery) (NNS terminals)))))))) (. .)))