Natural conceptual models show relationships between conceptual elements from a natural language. Objects are depicted using rectangles. Verbs are depicted using connectors with solid arrowheads. So, verb targets are the direct objects of normalized sentences. Prepositions are depicted using connectors with open arrowheads. So, prepositional targets are the indirect objects of normalized sentences. The cardinality of a target element is indicated by the number of arrowheads on the connector. Singularity is depicted with a single arrowhead, while multiplicity is depicted with multiple arrowheads.