"which" reference Is "which delved into the ...." referring to "a new generation of experimental comic artists" or "Julius Knipl Real Estate Photographer"? "RAW introduced a new generation of experimental comic artists in a wide array of styles: from the scratchy and expressive punk rock–styled comic Jimbo by Gary Panter (b. 1950), to the delicate ink washes found in Ben Katchor’s (b. 1951) Julius Knipl Real Estate Photographer, which delved into the sentimental attachments people have to the ephemera of urban life."