some WDI geo entities not exist in Gapminder's geo domain

[semio]

country	short_name
arb	Arab World
ceb	Central Europe and the Baltics
css	Caribbean small states
eap	East Asia & Pacific (developing only)
eas	East Asia & Pacific (all income levels)
eca	Europe & Central Asia (developing only)
ecs	Europe & Central Asia (all income levels)
emu	Euro area
euu	European Union
fcs	Fragile and conflict affected situations
hic	High income
hpc	Heavily indebted poor countries (HIPC)
lac	Latin America & Caribbean (developing only)
lcn	Latin America & Caribbean (all income levels)
ldc	Least developed countries: UN classification
lic	Low income
lmc	Lower middle income
lmy	Low & middle income
mea	Middle East & North Africa (all income levels)
mic	Middle income
mna	Middle East & North Africa (developing only)
nac	North America
noc	High income: nonOECD
oec	High income: OECD
oed	OECD members
oss	Other small states
pss	Pacific island small states
pre	Post-demographic dividend
pst	Pre-demographic dividend
sas	South Asia
ssa	Sub-Saharan Africa (developing only)
ssf	Sub-Saharan Africa (all income levels)
sst	Small states
umc	Upper middle income
wld	World