Let NS2,2,2\mathcal{NS}_{2,2,2}NS2,2,2 denote the nonsignalling conditional distributions P(a,b∣x,y)P(a,b\mid x,y)P(a,b∣x,y) with a,b,x,y∈{0,1}a,b,x,y\in\{0,1\}a,b,x,y∈{0,1}, and let Q2,2,2\mathcal{Q}_{2,2,2}Q2,2,2 denote the quantum-correlatio…