Utilize the input text as a context reference, choose the right relationship between 'Katanga Mining' and 'Glencore' from the options.
Options: stock exchange, business division, operator, owned by

KINSHASA, Sept 10 (Reuters) - Glencore (Xetra: A1JAGV - news ) held talks with Congolese officials in Kinshasa on Thursday over the company's plans to suspend some copper output at its Katanga Mining unit for 18 months, an adviser to the prime minister said.
owned by