ResearchBenchmarksLinguistic Minimal Pair Classification on BLiMP existential_there_quantifiers_2Follow51.8AccuracyTargeted11.03221.61632.242.784Apr 20, 2026Evaluation ResultsMethodMethodLinksAccuracyPerformance Delta (Δ)Accuracy (only NPI scope)Accuracy (existential there quantifiers)Accuracy (WH vs that with gap long distance)Accuracy (matrix question NPI licensor present)Accuracy (Principle A reconstruction)Accuracy (sentential subject island)Accuracy (left branch island echo question)Accuracy (Coordination constraint complex left branch)Accuracy (Principle A c-command)TargetedData Intervention Stra...Data Intervention Strategy=specific synthetic, Synthetic Data Percentage=1%2026.0451.828.4—51.8———————BaselinePre-training Corpus=10...Pre-training Corpus=100M FineWeb2026.0423.4——23.4———————RandomData Intervention Stra...Data Intervention Strategy=random synthetic, Synthetic Data Percentage=1%2026.0412.6——12.6———————