... Insummary, relations of two arguments a iand a jinthis paper include: 1) a i a j: a iis higher than a j, 2) a i≺ a j: a iis lower than a j, 3) a iARaj: a jis the referenced argument ... The Path features are designed as a sequentialcollection of phrase tags by (Gildea and Jurafsky,200 2). We also use Single Character CategoryPath, in which each phrase tag is clustered to a ... a i, 4) a iRAaj: a iisthe referenced argument of a j, 5) a iACaj: a jisthe continuation argument of a i, 6) a iCAaj: a iisthe continuation argument of a j, 7) a i= a j: a iand...