Using Beastiary (Warcraft III) and Great Hall (Warcraft III) as examples:
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Research
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Ensnare
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War Drums
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Envenomed Spears
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—
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Research
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Ensnare
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War Drums
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Envenomed Spears
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Liquid Fire
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Research
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Ensnare
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War Drums
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Envenomed Spears
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Liquid Fire
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Upgrades available
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Research
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Pillage
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Backpack
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Research
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Pillage
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Backpack
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