$$\mathcal{T} \sim P(\mathcal{T}) \\ \mathcal{T} = (S_{\mathcal{T}}, Q_{\mathcal{T}}) \\ S_{\mathcal{T}} = S_{\mathcal{T}}^s \cup S_{\mathcal{T}}^u \\ Q_{\mathcal{T}} = Q_{\mathcal{T}}^s \cup Q_{\mathcal{T}}^u \\ $$