Question: John Ratzenberger's "Made in America" has visited a variety of factories, including a company that since 1984 has been a wholly owned subsidiary of who?
Sentence (from "Optus"): The company primarily trades under the Optus brand, while maintaining several wholly owned subsidiary brands, such as Virgin Mobile Australia in the mobile telephony market, Uecomm in the network services market and Alphawest in the ICT services sector.
Relevant evidence: No