Core Set questions: Who “controls” Inspired after it enters play on another player’s ally? The reason I ask, is that the rules…

Question

Who “controls” Inspired after it enters play on another player’s ally? The reason I ask, is that the rules reference says that when a card changes control, upgrades or attachments also change control. But, I don’t see anything which says that upgrades or attachments change control when they enter play. [Second], can I play inspired on someone else’s ally, and if I do, they gain control of it?

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