while the third feels limited by its short running time 
(ROOT (SBAR (IN while) (S (NP (DT the) (JJ third)) (VP (VBZ feels) (VP (VBN limited) (PP (IN by) (NP (PRP$ its) (JJ short) (VBG running) (NN time))))))))
(ROOT (SBAR (IN ) (S (NP (DT ) (JJ )) (VP (VBZ ) (VP (VBN ) (PP (IN ) (NP (PRP$ ) (JJ ) (VBG ) (NN ))))))))