( ( The population ) ( ( was ( divided ( by ( ( ( ( ( living place ) ( -LRB- ( ( ( community or ) institution ) -RRB- ) ) ) and ) decade ) ( -LRB- ( ( ( seventies and ) eighties ) -RRB- ) ) ) ) ) ) . ) )
(ROOT (S (NP (DT The) (NN population)) (VP (VBD was) (VP (VBN divided) (PP (IN by) (NP (NP (NN living) (NN place)) (PRN (-LRB- -LRB-) (NP (NP (NN community)) (CC or) (NP (NN institution))) (-RRB- -RRB-)) (CC and) (NP (NN decade)) (PRN (-LRB- -LRB-) (NP (NP (NNS seventies)) (CC and) (NP (NNS eighties))) (-RRB- -RRB-)))))) (. .)))
The population was divided by living place (community or institution) and decade (seventies and eighties).
(ROOT (S (NP (NP (NNS Populations)) (VP (VBG living) (PP (IN in) (NP (CD one) (NN place))))) (VP (VBP form) (NP (DT a) (NN community))) (. .)))