(a-c) Edges and/or shortest path(s) between green tea and UGT enzymes (UGT, UGT1A1, UGT1A8, and UGT1A10) in NP-KG. (d-e) Shortest path(s) between kratom and cytochrome P450 enzymes (CYP3A4, CYP2D6) in NP-KG. If an edge in the path is derived from the literature, the year of publication is noted with the edge label. The rounded rectangles represent nodes and rectangles represent edges in NP-KG.