(2010) Extracts Heterogeneous en 24 352 ≈ 2,560 characters Lloret et al.
(2013) Extracts Heterogeneous en 310 10 100-200 words Our work Coherent Extracts Heterogeneous de 10 4-14 ≈ 500 words † there are corpora containing only extracts, which are suitable for evaluating extractive MDS systems.