[tag=DT] [!lemma=latter] □ □ □
[tag=DT] [!lemma=latter] [□] □ □
[tag=DT] [!lemma=latter] [] □ □
This is most often an issue for couples of similar ethnic or geographic origins . This was theatre acted in a naturalistic manner , by actors usually playing upper-class , or upper-middle-class characters , often in evening dress , in a set - often a drawing room or dining room - so naturalistic that it looked as if the room 's fourth wall had simply been removed . The intensity and often the character or quality of the overall drug effect may change substantially within a short period of time . The isotopic composition of the hydrogen of formation waters reveals δ D values of meteoric water , but the oxygen has often a relatively heavy δ 18O value , indicating temperature-induced isotopic exchange with the host rocks ( Fig. 5 ) .