Solanine
Solanine is a glycoalkaloid poison found in species of the nightshade family within the genus "Solanum" , such as the potato ( "Solanum tuberosum" ) , the tomato ( "Solanum lycopersicum" ) , and the eggplant ( "Solanum melongena" ) . 
<triplet> Solanine <subj> glycoalkaloid <obj> instance of <subj> potato <obj> found in taxon <triplet> nightshade <subj> Solanum <obj> taxonomic type <triplet> potato <subj> Solanum <obj> parent taxon <triplet> tomato <subj> Solanum <obj> parent taxon <triplet> eggplant <subj> Solanum <obj> parent taxon