What is the SVO in this sentence?

[prungni]

What is the SVO in:


Plutonium, which is used for nuclear weapons, is believed to be produced at the reactor's complex.

 

[Rover_KE]

Answered here.

Please do not post the same question simultaneously to more than one forum. Doing so wastes our valuable time. Instead, post your question to one forum and wait for replies. If you're not satisfied with those replies, you can try another forum, but please indicate in your thread that you've already asked the same question elsewhere (provide a link), and outline why you were not satisfied with the answers you received already.​

(teechar)

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Please read this extract from the Posting Guidelines:

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I have deleted your other threads for the same reasons'.​