flowchart LR
    subgraph Modes[Probing Modes]
        Q[Query Text] -->|Q2B| B1[Brand Names]
        E[Entity Topic] -->|E2B| B2[Brand Names]
        BR[Brand Name] -->|B2E| C[Associated Concepts]
    end

    subgraph Norm[Normalisation]
        B1 --> N[Strip Noise]
        B2 --> N
        N --> M[Matryoshka Prefix Tree]
        M --> R[Root Brand Aggregate]
    end