Original sentence: Animal ethicists such as Gary Francione have argued that reducing animal suffering is not enough; it needs to be made illegal and  abolished, just as other injustices such as slavery, torture, rape and  genocide have been made illegal and abolished.In response, animal welfare advocates such as Farm Sanctuary argue that commodifying and slaughtering animals is incompatible with the definition of "humane"  (which according to Webster's Dictionary, means "characterized by kindness, mercy or compassion")
Edited sentence: However, some (for example, Farm Sanctuary) believe that commodifying and slaughtering animals is incompatible with the definition of "humane," which according to Webster's Dictionary, means "characterized by kindness, mercy or compassion"