Assertion: magnetic field | /r/CapableOf | strengthen by roughly 2 percent
Facets:
value: over asia
type: LOCATION
value: in that same time period
type: TEMPORAL
Source sentences:
text: Presenting at the annual Living Planet Symposium in Prague last week, ESA researchers showed that the magnetic field has weakened by about 3.5 percent over the top of North America since 1999, but has strengthened by roughly 2 percent over Asia in that same time period.