21.   Time to look at the building designed by James Stewart Polshek and Todd H. Schliemann, the principal architects.

22.   Yannos Papantoniou, the finance minister and a principal architect of government policy, insists the changes are real.

23.   Gallucci and Kang were the principal architects of a historic deal, signed last October, that ended nearly two years of acute nuclear tensions on the Korean Peninsula.

24.   Gallucci was a principal architect of an agreement last October with North Korea to defuse tensions.

25.   Delors is therefore considered one of the principal architects of the euro.