lanci gismu

x1 is a flag/banner/standard of/symbolizing x2 with pattern(s) x3 on material x4.

See also gugde, jecta.

In notes:

gugde
x1 is the country of peoples x2 with land/territory x3; (people/territory relationship).
jecta
x1 is a polity/state governing territory/domain x2; [government/territory relationship].
jbolanci
x1 is a Lojbanic flag, with patterns x2 and material x3
jeclanci
x1=l1 is the national flag of country/state/polity x2=l2=j1 with pattern(s) x3=l3 on material x4=l4
armori
x1 is a coat-of-arms symbolizing x2
blazone
x1 (object, text) is a blazon, verbal or written description of the coat of arms x2
slogane
x1 (text, entity) is a slogan of x2 (entity)