Robert made the fraud to kill his witness personally, then told John opposite party also to look for Allan.

罗伯特制造骗局亲手杀死了自己的证人，然后告诉约翰对方还要找艾伦。

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In the tangled warfare, John leads Allan to run away, but Robert actually to boss Baker said that John is bribed resists arrest.

混战中，约翰带着艾伦逃走，而罗伯特却对上司贝克说约翰受贿拒捕。

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Allan has seen through the human who Robert sends, ran away the zoo.

艾伦识破了罗伯特派来的人，逃进了动物园。

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But the decision to include slideshows by Robert Barry and Allan Sekula and film pieces by Gordon Matta-Clark and Marcel Broodthaers while excluding video (for reasons of cost and size?) leaves a major hole in the story.

WSJ: Light Years: Conceptual Art and the Photograph, 1964-1977 | Snapshot of a Movement | By Richard B. Woodward