( ( Watching ( electrons move ) ) ( in ( ( topological insulators ) ( with ( femtosecond resolution ) ) ) ) )
(ROOT (S (VP (VBG Watching) (NP (JJ electrons) (NN move)) (PP (IN in) (NP (NP (JJ topological) (NNS insulators)) (PP (IN with) (NP (JJ femtosecond) (NN resolution))))))))
Watching electrons move in topological insulators with femtosecond resolution
(ROOT (S (NP (NNP Rubber)) (VP (VBZ is) (NP (NP (DT an) (NN example)) (PP (IN of) (NP (NP (DT a) (-LRB- -LRB-) (NP (NN n)) (-RRB- -RRB-) (NNS insulators)) (SBAR (WHNP (WDT that)) (S (VP (VBZ does) (RB not) (VP (VB allow) (S (NP (NNS electrons)) (VP (TO to) (VP (VB move) (PP (IN through) (NP (PRP them)))))))))))))) (. .)))