Premise: Led Zeppelin . Their fourth album , which features the track `` Stairway to Heaven '' , is among the most popular and influential works in rock music , and it helped to secure the group 's popularity . `` Stairway to Heaven '' is a song by the English rock band Led Zeppelin , released in late 1971 .
Hypothesis: Led Zeppelin were a musical group.
Label: ENTAILMENT