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Explain :the subspace$X^{'}$ of a Weil torus$X$ consists of the Hodge classes,and belongs to$H^{4}\left ( X,\mathbb{Q} \right )$ ,by Hodge decomposition,it contained in $H^{2,2}\left ( X \right )$ ,If it is not Hodge classes,maybe contained in$H^{1,3}\left ( X \right )$ ,$H^{3,1}\left ( X \right )$ ,$H^{0,4}\left ( X \right )$ or$H^{4,0}\left ( X \right )$ .Of course,the Hodge classes of$T$ whether exist in $X$ ,I hope have proof or counterexample .Prove its existence is a very diffficult.