Thus it leads to the prediction of more single E and less (E1, E2) pairs.
entity pair (E1, E2) has higher precision and lower recall than single E. Besides, the predicted results of (E1, E2) in Table 2 have about 3% improvement when compared predicted results in Table 1, which means that 3% of the test data is predicted to be wrong because the relation type is predicted to be wrong.