1 ! Copyright (C) 2019-2020 KUSUMOTO Norio.
2 ! See https://factorcode.org/license.txt for BSD license.
3 USING: tools.test logic lists logic.examples.zebra2 ;
13 { nationality norwegian }
27 { nationality english }
34 { nationality german }
53 [ { houseso Hs X Y } query ] unit-test