Assertion: arch | /r/HasProperty | important example
Facets:
Source sentences:
text: Constantine's Arch is an important example, frequently cited in surveys of art history, of the stylistic changes of the 4th century, and the "collapse of the classical Greek canon of forms during the late Roman period", a sign the city was in decline, and would soon be eclipsed by Constantine's founding of a new capital at Constantinople in 324.