According to Google-translated info on the website of the Chinese Plant Varieties Protection Information Network (www.cnpvp.com), Westerland was involved in creating the seed parent of this rose. And Bonanza was involved in creating the pollen parent.
"Description: Cork Lemoine female parent to Westerland and Lichtkönigin Lucia (Korlilub) hybrid, male parent for the Bonanza and unknown hybrid seedlings."
So, yeah, [(Westerland x Queen Lucia of Light) x ( Bonanza x unknown)] is what the translated gibberish implies. These new Chinese patents for plants are always in appropriate order of gender placement within the sentences.
Edit: The pollen parent could possibly just be Rugelda, which would be unsurprising.