A graph-based model comprises a plurality of entity nodes indicative of a plurality of entities within a dataset and a hierarchical structure of nodes. The hierarchical structure of nodes include a plurality of data nodes indicative of a plurality of data values associated with the plurality of entities and a plurality of context nodes coupled between the plurality of entity nodes and the plurality of data nodes. The plurality of context nodes define contextual relationships between the plurality of entity nodes and the plurality of data nodes. A query comprising a query value is received and a node within the hierarchical structure of nodes is identified based on the query value. A traversal path is determined from the node to a first entity node related to the node and a response to the query is generated based on the traversal path.