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If we analyze this in accord with the "spreadsheet" model of relational composition, the core of it is a particular way of composing a 3-adic "giving" relation ''G'' ⊆ ''X'' × ''Y'' × ''Z'' with a 2-adic "training" relation ''T'' ⊆ ''Y'' × ''Z'' in such a way as to determine a certain 2-adic relation (''G'' o ''T'') ⊆ ''X'' × ''Z''.  Table 13 schematizes the associated constraints on tuples.

If we analyze this in accord with the spreadsheet model of relational composition, the core of it is a particular way of composing a 3-adic ''giving'' relation <math>G \subseteq X \times Y \times Z</math> with a 2-adic ''training'' relation <math>T \subseteq Y \times Z</math> in such a way as to determine a certain 2-adic relation <math>(G \circ T) \subseteq X \times Z.</math> Table&nbsp;13 schematizes the associated constraints on tuples.

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