«وقد تقسم القضية باعتبار الموضوع»
A proposition may also be divided according to its subject.
When the subject is a true particular, the proposition is singular. With a universal subject, ask whether the judgment concerns the nature itself or its instances. A judgment about the nature is natural; a judgment about its instances is quantified or indefinite depending on whether their quantity is specified.
Particular identity, conceptual nature and the quantity of instances are distinct issues. The grammatical presence of a definite article alone does not determine the type.