Saxe-Coburg and Gotha (German: "Sachsen-Coburg und Gotha" ), or Saxe-Coburg-Gotha, was an Ernestine duchy ruled by a branch of the House of Wettin, consisting of territories in the present-day states of Bavaria and Thuringia in Germany. It lasted from 1826 to 1918.
The ruling of the duchy was by only  a portion of a particular house
( z1 rule :ARG0 ( z2 portion :part-of ( z3 house :mod ( z4 particular ) ) :mod ( z5 only ) ) :ARG1 ( z6 duchy ) )