Question: Has XML format been an open format longer than PDF format?, Answer:Yes, Description of PDF: family of file formats used to present documents, Fact1: XML format was defined as an open standard in 1998., Fact2: PDF was released as an open standard in 2008.
Step1: When was XML released as an open format?, Step2: When was PDF released as an open format?, Step3: Is #1 before #2?, not_definitive_answer: False, incorrect_answer: False