With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: John Lennon was in a band that formed in London in 1970 only.
text_B: Dulwich Wood together with the adjacent Sydenham Hill Wood is the largest extant part of the ancient Great North Wood in the London Borough of Southwark .. Dulwich. Dulwich. Sydenham Hill Wood. Sydenham Hill Wood. Great North Wood. Great North Wood. London Borough of Southwark. London Borough of Southwark. The two woods were separated after the relocation of The Crystal Palace in 1854 and the creation of the high level line in 1865 .. The Crystal Palace. The Crystal Palace. high level line. Crystal Palace and South London Junction Railway. The wood is privately owned and managed by the Dulwich Estate .. Dulwich. Dulwich. Dulwich Estate. Dulwich Estate
not_related.