sentences:  The artist can be more accurately viewed as the "catalyst" in relational art, rather than being at the centre.One of the first attempts to analyze and categorize art from the 1990s, the idea of relational art was developed by Nicolas Bourriaud in 1998 in his book "Esthétique relationnelle" ("Relational Aesthetics").The term was first used in 1996, in the catalogue for the exhibition "Traffic" curated by Bourriaud at CAPC musée d'art contemporain de Bordeaux.