What is the relationship between 'Katanga Mining' and 'Glencore' in the context of the input sentence.
Options: owned by, distributed by, location of formation, product/material produced

Glencore said last month it would suspend production at its Katanga Mining (Toronto: KAT.TO - news ) unit for 18 months as it pursues an $880 million modernization project to lower costs.
owned by