Teruyuki Mizuno and I investigate constraints on contrast sluicing in Japanese and English, as in examples such as "I know which book John read, but not which magazine," which has been relatively understudied in the literature on sluicing. For the first time, we discuss contrast sluicing between multiple wh question antecedent and slucing clauses, and observe a curious pattern of grammaticality in Japanese. This pattern constitutes a puzzle for the LF syntax of sluicing and/or pair-list multiple wh questions.

• Mizuno and Erlewine, 2018. “Constraints on contrast sluicing.”  
  Japanese/Korean Linguistics 24, pages 201–214.
• 水野 輝之、アーリーワイン マイケル芳貴 [Mizuno and Erlewine], 2016. “多重wh疑問文のペアリスト解釈とスルーシング [Sluicing and the pair-list interpretation of multiple wh-questions].”  
  日本言語学会第152回大会予稿集 [Proceedings of the 152nd meeting of the Linguistic Society of Japan], pages 204–209.