With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Christina Applegate has been in several countries.
text_B: Catfish Rising is the 18th studio album by the British rock group Jethro Tull , released in 1991 .. Jethro Tull. Jethro Tull ( band ). British rock. British rock. It is the first Tull album to feature keyboardist Andrew Giddings .. Andrew Giddings. Andrew Giddings
not_related.