( But ( ( ( ( ( ( Lyme disease ) ( is ( caused ( by ( ( ( ( a bacterium ) ( ( ( named ` ) ( Borrelia burgdorfi ) ) ' ) ) , ) ( ( named ( for ( Burgdorf ( , Germany ) ) ) ) ( where ( it ( was ( first identified ) ) ) ) ) ) ) ) ) ) , ) and ) ( ( the bitch ) ( showed ( a ( positive ( Lyme ( Western ( Blot test ) ) ) ) ) ) ) ) . ) )
(ROOT (S (CC But) (S (NP (NNP Lyme) (NN disease)) (VP (VBZ is) (VP (VBN caused) (PP (IN by) (NP (NP (NP (DT a) (NN bacterium)) (VP (VBN named) (`` `) (NP (NNP Borrelia) (NNS burgdorfi)) ('' '))) (, ,) (VP (VBN named) (PP (IN for) (NP (NNP Burgdorf) (, ,) (NNP Germany))) (SBAR (WHADVP (WRB where)) (S (NP (PRP it)) (VP (VBD was) (VP (ADVP (RB first)) (VBN identified))))))))))) (, ,) (CC and) (S (NP (DT the) (NN bitch)) (VP (VBD showed) (NP (DT a) (JJ positive) (NNP Lyme) (NNP Western) (NNP Blot) (NN test)))) (. .)))
But Lyme disease is caused by a bacterium named 'Borrelia burgdorfi', named for Burgdorf, Germany where it was first identified, and the bitch showed a positive Lyme Western Blot test.
(ROOT (S (NP (JJ Lyme) (NN disease)) (VP (VBZ is) (VP (VBN caused) (PP (IN by) (NP (NNS bacteria))))) (. .)))
Lyme disease is caused by bacteria.