We use Waseem and Hovy BIBREF5, Davidson et al. BIBREF9, and Waseem et al. BIBREF10 as baselines and compare the results with our different fine-tuning strategies using pre-trained BERTbase model.  
 Question: What baseline is used?
Waseem and Hovy BIBREF5 Davidson et al. BIBREF9 Waseem et al. BIBREF10