what makes it transporting is that it 's also one of the smartest 
(ROOT (S (SBAR (WHNP (WP what)) (S (VP (VBZ makes) (S (NP (PRP it)) (ADJP (VBG transporting)))))) (VP (VBZ is) (SBAR (IN that) (S (NP (PRP it)) (VP (VBZ 's) (ADVP (RB also)) (NP (NP (CD one)) (PP (IN of) (NP (DT the) (JJS smartest))))))))))
(ROOT (S (SBAR (WHNP (WP )) (S (VP (VBZ ) (S (NP (PRP )) (ADJP (VBG )))))) (VP (VBZ ) (SBAR (IN ) (S (NP (PRP )) (VP (VBZ ) (ADVP (RB )) (NP (NP (CD )) (PP (IN ) (NP (DT ) (JJS ))))))))))