Premise: Led Zeppelin were an English rock band formed in London in 1968 . Although the group was initially unpopular with critics , they achieved significant commercial success with albums such as Led Zeppelin ( 1969 ) , Led Zeppelin II ( 1969 ) , Led Zeppelin III ( 1970 ) , Led Zeppelin IV ( 1971 ) , Houses of the Holy ( 1973 ) , and Physical Graffiti ( 1975 ) .
Hypothesis: Led Zeppelin is a clothing line.
Label: CONTRADICTION