<s>[INST] Given an abstract text, please determine whether it contains any drug mentions. Provide a 'Yes' or 'No' answer based on the presence or absence of drugs. Abstract Text: A Phase 2, Randomized, Double-Blind, Placebo-Controlled Trial Of Pra023 As Induction Therapy In Patients With Moderately To Severely Active Ulcerative Colitis: Artemis-Uc, Cohort 1[/INST] Yes</s>