21.   In the era of suburban exodus, the urban core was not sufficiently alluring to attract people after work hours.

22.   It would be a natural issue for Al Gore, given its equal relevance to close-in suburbs as well as urban cores.

23.   One view features a bleak landscape of crumbling urban cores, increasingly isolated wealthy enclaves, transportation paralysis, deteriorating air and water quality and feeble economic growth.

24.   Pockets of Hispanics have developed in areas of the urban core historically considered African-American.

25.   Rotating around this urban core like so many satellites are a hackneyed collection of hangers-on, traitors and unwanted trespassers.

26.   The city grapples with the concentrated poverty that bedevils other urban cores.

27.   The heart of Portland is booming, the envy of cities such as Phoenix and Mesa, which are struggling to revive their urban cores.

28.   The layout recalls a piece of ancient urban core.

29.   The idea was to give the designer a sense of the urban core where his courthouse would become reality.

30.   There have been some attempts to create urban cores outside of central Tokyo.