Full Idea
The notion of 'places' in a predicate is the key to the modern concept of a predicate. Any expression obtained from a sentence by deleting one or more singular terms from the sentence counts as a predicate.
Gist of Idea
Modern predicates have 'places', and are sentences with singular terms deleted from the places
Source
Donald Davidson (Truth and Predication [2005], 4)
Book Reference
Davidson,Donald: 'Truth and Predication' [Belknap Harvard 2005], p.96