Question: what were their performance results?
Answer:  the hybrid NER model achieved a F1 score of $0.995$ on synthesized queries and $0.948$ on clinical notes while the i2b2 NER model achieved a F1 score of $0.441$ on synthesized queries and $0.927$ on clinical notes
Alternative answer: hybrid NER model achieved a F1 score of $0.995$ on synthesized queries and $0.948$ on clinical notes