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Ottem and Rennemo constructed a Fano 4-fold with torsion in $H_2(X, \mathbbZ)$. We simplify the computation of $H_2(X, \mathbb Z)$ and also exhibit 2lines $L', L''\subset X$ such that $L'- L''$ generates the torsion.

Comments on Fano varieties with torsion in $H^3(X, {\mathbb Z})$ by J. C. Ottem and J. V. Rennemo