Assertion: euro's introduction | /r/HasProperty | reserved for flag
Facets:
value: usually
type: TEMPORAL
Source sentences:
text: In the 1990s to 2000s, there was an active movement towards a federalisation of the European Union, with the introduction of symbols and institutions usually reserved for sovereign states, such as citizenship, a common currency (used by 19 out of 27 members), a flag, an anthem and a motto (In Varietate Concordia, "United in Diversity").