With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: The Nilotic languages are spoken in East Africa.
text_B: In marketing , attribution is the identification of a set of user actions -LRB- `` events '' or `` touchpoints '' -RRB- that contribute in some manner to a desired outcome , and then the assignment of a value to each of these events .. marketing. marketing. Marketing attribution provides a level of understanding of what combination of events in what particular order influence individuals to engage in a desired behavior , typically referred to as a conversion .
not_related.