human
Considering the provided database schema and associated query, produce SQL code to retrieve the answer to the query. 
###Database Schema: Masculine a-stems, Masculine u-stems, Feminine ō-stems, Neuter a-stems, Masculine an-stems, Feminine ōn-stems
###Question: What ending does siangu get for ön?
gpt
SELECT Feminine ōn-stems FROM table WHERE Feminine ō-stems = siangu