pevna experimental gismu

x1: its qualities are represented as a metaphor x2 in dimension x3+1,2

x3 can include references to x1 and x2. See pe'a, sidysmu, tanru, metfo, ve lujvo, cimjvo

In notes:

metfo
x1 (bridi) is a metaphor/figurative expression having literal meaning x2 to observer x3
pevnytau
x1 is a kenning (poetic metaphorical compound) formed with x2 modifying x3, giving meaning x4 in usage/instance x5.