( ( in 2006 ) ( , ( Pluto ( ( ( lost ( that distinction ) ) ( when ( it ( was ( downgraded ( to ( ( the status ) ( of ( dwarf planet ) ) ) ) ) ) ) ) ) . ) ) ) )
(ROOT (S (PP (IN in) (NP (CD 2006))) (, ,) (NP (NNP Pluto)) (VP (VBD lost) (NP (DT that) (NN distinction)) (SBAR (WHADVP (WRB when)) (S (NP (PRP it)) (VP (VBD was) (VP (VBN downgraded) (PP (TO to) (NP (NP (DT the) (NN status)) (PP (IN of) (NP (NN dwarf) (NN planet)))))))))) (. .)))
in 2006, Pluto lost that distinction when it was downgraded to the status of dwarf planet.
(ROOT (S (NP (NNP Pluto)) (VP (VBZ is) (ADVP (RB now)) (VP (VBN called) (NP (NN dwarf) (NN planet)))) (. .)))