In this task, you are given Wikipedia articles on a range of topics, we ask you to write a question based on the content of the articles that can be answered in a binary manner i.e. True or False.

Dallas Cowboys -- Throughout the years, the Cowboys' blue jersey has been popularly viewed to be ''jinxed'' because the team often seemed to lose when they wore them. This purported curse drew attention after the team lost Super Bowl V with the blue jerseys. However, the roots of the curse likely date back earlier to the 1968 divisional playoffs, when the blue-shirted Cowboys were upset by the Cleveland Browns in what turned out to be Don Meredith's final game with the Cowboys. Dallas's lone victory in a conference championship or Super Bowl wearing the blue jerseys was in the 1978 NFC Championship game against the Los Angeles Rams.
have the dallas cowboys ever lost a super bowl