With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Hypothyroidism can lead to poor ability to tolerate cold.
text_B: Robert `` Bobby '' Michael Kielty -LRB- last name pronounced KELT-ee -RRB- -LRB- born August 5 , 1976 -RRB- is an American former professional baseball outfielder .. baseball. baseball. outfielder. outfielder. Bobby retired from professional baseball on 5 May 2014 as a member of the Lancaster Barnstormers .. baseball. baseball. Lancaster Barnstormers. Lancaster Barnstormers
not_related.