To give a rough idea, examples of substance are man, horse; of quantity: four foot, five foot; of qualification: white, grammatical; of a relative: double, half, larger; of where: in the Lyceum, in the market place; of when: yesterday, last year; of being in a position: is lying, is sitting; of having: has shoes on, has armour on; of doing: cutting, burning; of being affected: being cut, being burned.