A diskette is also called a  floppy ; the reason for the name is not immediately apparent (nor why the item is called a  diskette , for that matter), but all becomes clear.
( ( ( ( ( ( A diskette ) ( ( is also ) ( called ( ( ( a floppy ) ; ) ( ( the reason ) ( for ( ( ( the name ) ( ( is not ) ( immediately apparent ) ) ) ( -LRB- ( ( nor ( why ( ( the item ) ( is ( ( ( called ( a diskette ) ) , ) ( for ( that matter ) ) ) ) ) ) ) -RRB- ) ) ) ) ) ) ) ) ) , ) but ) ( all ( becomes clear ) ) ) . )
(ROOT (S (S (NP (DT A) (NN diskette)) (VP (VBZ is) (ADVP (RB also)) (VP (VBN called) (NP (NP (DT a) (JJ floppy)) (: ;) (NP (NP (DT the) (NN reason)) (PP (IN for) (NP (NP (DT the) (NN name)) (SBAR (S (VP (VBZ is) (RB not) (ADJP (RB immediately) (JJ apparent))))) (PRN (-LRB- -LRB-) (VP (VBN nor) (SBAR (WHADVP (WRB why)) (S (NP (DT the) (NN item)) (VP (VBZ is) (VP (VBN called) (NP (DT a) (NN diskette)) (, ,) (PP (IN for) (NP (DT that) (NN matter)))))))) (-RRB- -RRB-))))))))) (, ,) (CC but) (S (NP (DT all)) (VP (VBZ becomes) (ADJP (JJ clear)))) (. .)))
The reason diskettes are called floppies is obvious to everyone at the beginning.
( ( The ( reason diskettes ) ) ( ( are ( called ( floppies ( is ( obvious ( to ( everyone ( at ( the beginning ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (DT The) (NN reason) (NNS diskettes)) (VP (VBP are) (VP (VBN called) (SBAR (S (NP (NNS floppies)) (VP (VBZ is) (ADJP (JJ obvious) (PP (TO to) (NP (NP (NN everyone)) (PP (IN at) (NP (DT the) (NN beginning))))))))))) (. .)))