​​EntityList[EntityClass["Country","EU"]]
Out[]=

Austria
,
Belgium
,
Bulgaria
,
Croatia
,
Cyprus
,
Czech Republic
,
Denmark
,
Estonia
,
Finland
,
France
,
Germany
,
Greece
,
Hungary
,
Ireland
,
Italy
,
Latvia
,
Lithuania
,
Luxembourg
,
Malta
,
Netherlands
,
Poland
,
Portugal
,
Romania
,
Slovakia
,
Slovenia
,
Spain
,
Sweden

Out[]=
EntityClass["Chemical","greenhouse gases"]​​
Out[]=
greenhouse gases
EntityList@
greenhouse gases
CHEMICALS

methane
CHEMICAL
,
hydrochlorofluorocarbons
CHEMICALS
,
carbon dioxide
CHEMICAL
,
nitrous oxide
CHEMICAL
,
methyl chloride
CHEMICAL
,
perfluorocarbons
CHEMICALS
,
methylene chloride
CHEMICAL
,
tetrafluoromethane
CHEMICAL
,
1-chloro-1,1-difluoroethane
CHEMICAL
,
pentafluoroethane
CHEMICAL
,
dichlorodifluoromethane
CHEMICAL
,
1,1,1-trichloroethane
CHEMICAL
,
1,1,1,3,3-pentafluoropropane
CHEMICAL
,
trichlorofluoromethane
CHEMICAL
,
bromotrifluoromethane
CHEMICAL
,
1,1,1,3,3,3-hexafluoropropane
CHEMICAL
,
2,2-dichloro-1,1,1-trifluoroethane
CHEMICAL
,
carbon tetrachloride
CHEMICAL
,
perfluorobutane
CHEMICAL
,
1,2-dibromotetrafluoroethane
CHEMICAL
,
perfluorohexane
CHEMICAL

​​data=EntityValue
France
COUNTRY
,
Germany
COUNTRY
,
Italy
COUNTRY
,
Poland
COUNTRY
,
Spain
COUNTRY
,
Sweden
COUNTRY
,​​
carbon dioxide
CHEMICAL
,
methane
CHEMICAL
,
nitrous oxide
CHEMICAL
,
hydrochlorofluorocarbons
CHEMICALS
,
perfluorocarbons
CHEMICALS
​​​​BarChart[MapAt[Callout[#,"Since 1999"]&,data,{3,2}],​​ChartLabels{Callout[{"France","Germany","Italy","Poland","Spain","Sweden"},​​LabelStyle->16],None}]​​