Assertion: carbon tetrachloride's concentration | /r/AtLocation | decline
Facets:
value: since 1992
type: TEMPORAL
value: for the reasons
type: CAUSE
Source sentences:
text: However, since 1992 its atmospheric concentrations have been in decline for the reasons described above (see also the atmospheric time-series figure).
text: However, since 1992 its atmospheric concentrations have been in decline for the reasons described above (see also the atmospheric time-series figure).
text: However, since 1992 its atmospheric concentrations have been in decline for the reasons described above (see also the atmospheric time-series figure).
text: However, since 1992 its atmospheric concentrations have been in decline for the reasons described above (see also the atmospheric time-series figure).
text: However, since 1992 its atmospheric concentrations have been in decline for the reasons described above (see atmospheric concentration graphs in the gallery).