5.The number of nodes evaluated using NOPRUNE-BEL can be computed as (f₁ + 1) ⋅ (f₂ + 1) ⋅ (f₃ + 1) ⋅ (a + 1)^c+1, where f₁, f₂ and f₃ are the number of fire engines are station 1, 2 and 3, respectively, a is the number of ambulances and c is the number of civilians. Each node provides a complete conditional role allocation, assuming different numbers of civilians at each fire station.