Split-antecedent relative clauses and the symmetry of predicates
This paper presents the results of two experiments in German testing the acceptabilityof (non-)restrictive relative clauses (NRCs/RRCs) with split antecedents (SpAs). Accordingto Moltmann (1992), SpAs are only grammatical if their parts occur within the conjuncts ofa coordinate structure and if they have identical grammatical functions. Non-conjoined SpAsthat form the subject and the object of a transitive verb are predicted to be ungrammatical. Ourstudy shows that the acceptability of such examples improves significantly if the predicate thatrelates the parts of the SpA is symmetric. Moreover, it suggests that NRCs and RRCs behavedifferently in these cases with respect to the SpA-construal. We can make sense of this observationif we follow Winter (2016) in assuming that transitive symmetric predicates have to beanalyzed as unary collective predicates and thus provide a collective antecedent for the RC atthe semantic (not the syntactic) level. As we will argue, this accounts for some of the disagreementwe found in the literature and gives us new insights into both the semantics of symmetricpredicates and the semantics of NRCs.Keywords: non-restrictive relative clause, restrictive relative clause, symmetric predicate, splitantecedent.