When street artist Banksy destroyed one of his works of art

When street artist Banksy destroyed one of his works of art last week seconds after it was sold at auction, he probably added to its value, with some experts suggesting it could now be worth double its original price.
Japan Today

[When]
S (street artist) Banksy バンクシー
V [destroyed] 破壊した
O one [of] his works [of] art (last week)

補足
seconds [after]
数秒後

S it
V [was sold]
[at] auction
,

S he
[(probably) added to] 追加した
O its value 価値
,

[with] some experts
どんな
V [suggesting]
S it
V [could now be]
O worth double its original price. 元の価格の2倍の価値

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