Having transformed Glencore from a poorly understood commodities trader based in Baar into one of the world's largest resources companies through the spectacular $US60 billion float four years ago and the takeover of mining group Xstrata in 2013, the hard-nosed South African was lauded as a savvy deal maker.
Refer to the input text as context and select the correct relationship between 'Glencore' and 'Baar' from the available options.
Options: headquarters location, employer, operator, parent organization