Q: In this task you will be given a passage and a yes/no question based on the passage. You should answer the question using the information from the passage.
passage: 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.
question: have the dallas cowboys ever lost a super bowl?
A:
Yes