With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Transformers: Dark of the Moon is a political party slogan.
text_B: The Magdalena River -LRB- Rio Magdalena , -LSB- ˈri.o maɣðaˈlena -RSB- ; Less commonly Rio Grande de la Magdalena -RRB- is the principal river of Colombia , flowing northward about 1528 km through the western half of the country .. river. river. Colombia. Colombia. It takes its name from the biblical figure Mary Magdalene .. Mary Magdalene. Mary Magdalene. It is navigable through much of its lower reaches , in spite of the shifting sand bars at the mouth of its delta , as far as Honda , at the downstream base of its rapids .. Honda. Honda, Tolima. delta. river delta. It flows through the Magdalena River Valley .. Magdalena River Valley. Magdalena River Valley. Its drainage basin covers a surface of 273000 km2 , which is 24 % of the country 's area and where 66 % of its population lives .. drainage basin. drainage basin
not_related.