An HPSG-to-CFG Approximation of Japanese Bernd Kiefer author Hans-Ulrich Krieger author Melanie Siegel author 2000 text COLING 2000 Volume 2: The 18th International Conference on Computational Linguistics conference publication kiefer-etal-2000-hpsg https://aclanthology.org/C00-2155/ 2000