With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Bam Margera is a skateboarder.
text_B: Brandon Cole `` Bam '' Margera -LRB- -LSB- mɑrˈdʒɛərə -RSB- or ; born September 28 , 1979 -RRB- is an American professional skateboarder , stunt performer , and television personality .. skateboarder. skateboarder. stunt performer. stunt performer. He came to prominence after appearing in MTV 's Jackass crew .. Jackass. Jackass ( TV series ). He has since appeared in MTV 's Viva La Bam and Bam 's Unholy Union , all three Jackass movies , and Haggard and Minghags , both of which he co-wrote and directed .. Jackass. Jackass ( TV series ). Viva La Bam. Viva La Bam. Haggard. Haggard : The Movie. Minghags. Minghags : The Movie
related.