<qa>  What is a randomized, open-label, multicenter, Phase 3 study?This is a randomized, open-label, multicenter, Phase 3 study comparing the efficacy and safety of eribulin with dacarbazine in subjects with advanced soft tissue sarcoma who have disease progression within 6 months prior to study enrolment following standard therapies which must have included an anthracycline, unless contraindicated and then at least one additional regimen after failure of the anthracycline. 