In the context of the input sentence, determine the relationship between 'HBO' and 'WarnerMedia'.
Options: founded by, owned by, product/material produced, operator

A few months ago, we took the next step and moved Xandr to WarnerMedia so we could accelerate our progress in building software-based entertainment platforms supported by both subscription and advertising, like the AVOD version of HBO Max we plan to launch next year.
owned by