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Although use of the Naranjo adverse reaction probability scale indicated a probable relationship (score of 6) between the patient's development of methotrexate toxicity and omeprazole use, we believe this was a drug-drug interaction case consistent with previous reports in the literature.
 the patient: Subject; methotrexate toxicity: Effect; methotrexate: Treatment; and omeprazole use: Treatment; methotrexate: Treatment.Drug; omeprazole: Treatment.Drug; methotrexate: Combination.Drug; omeprazole: Combination.Drug
Given event type and trigger, please tell me the arguments of all the listed option. Output format is "name1: role1; name2: role2". 
Event type: adverse event 
  Option: Treatment.Freq, Subject.Population, Combination.Drug, Subject.Gender, Treatment.Duration, Subject, Effect, Treatment, Treatment.Disorder, Subject.Disorder, Treatment.Route, Subject.Race, Treatment.Time_elapsed, Treatment.Dosage, Subject.Age, Treatment.Drug 
Text: {0} 
Answer:
 the patient: Subject; methotrexate toxicity: Effect; methotrexate: Treatment; and omeprazole use: Treatment; methotrexate: Treatment.Drug; omeprazole: Treatment.Drug; methotrexate: Combination.Drug; omeprazole: Combination.Drug