According to tradition, they founded Tenochtitlan ( "Place of the High Priest Tenoch" ) after much wandering when they saw on an island in Lake Texcoco the sign that their god Huitzilopochtli had indicated -- an eagle perched on a cactus, eating a serpent .
tales have been passe through genertions of their diety giving them direct signs
( z1 passe :domain ( z2 tale :ARG0-of ( z3 give :ARG1 ( z4 signal :ARG2 ( z5 they ) :ARG1-of ( z6 direct ) ) :ARG2 z5 ) ) :path ( z7 generation :mod ( z8 diety :poss z5 ) ) )