Full Idea
In some sense which it would be very desirable to define, a relational proposition seems to be 'about' its terms, in a way in which it is not about the relation.
Gist of Idea
Relational propositions seem to be 'about' their terms, rather than about the relation
Source
Bertrand Russell (Meinong on Complexes and Assumptions [1904], p.53)
Book Reference
Russell,Bertrand: 'Essays in Analysis', ed/tr. Lackey,Douglas [George Braziller 1973], p.53
A Reaction
Identifying how best to specify what a proposition is actually 'about' is a very illuminating mode of enquiry. You can't define 'underneath' without invoking a pair of objects to illustrate it. A proposition can still focus on the relation.
Related Idea
Idea 19201 Propositions can be 'about' an entity, but that doesn't make the entity a constituent of it [Merricks]