nol tru nau lujvo

x₁ is the king of x₂ by standard x₃.

see also noltruni'u, nolraitru

jbovlaste

In notes:

nolraitru: t₁=n₁ is a regent/monarch of t₂ by standard n₂.
noltruni'u: x₁ is the queen of x₂ by standard x₃.