Internet Provider Security (IPS) tags are used by domain registrar to administer a domain name registration service and related Domain Name System (DNS) services. An IPS tag is the label that applies to each registrar that registers domains in the country-code top level domain "uk" and is required to transfer domain names from one registrar to another.
This text talks about a country-code domain that contains the letters K and U in the reverse order.
( z1 talk :ARG0 ( z2 text :mod ( z3 this ) ) :ARG1 ( z4 domain :mod ( z5 code :mod ( z6 country ) ) :ARG0-of ( z7 contain :ARG1 ( z8 letter :mod ( z9 string-entity :value "K" ) :mod ( z10 string-entity :value "U" ) :mod ( z11 order :ARG1-of ( z12 reverse ) ) ) ) ) )