With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Malala Yousafzai's father did humanitarian work.
text_B: The pigeon pea -LRB- Cajanus cajan -RRB- is a perennial legume from the family Fabaceae .. Fabaceae. Fabaceae. Cajanus. Cajanus. legume. legume. family. family ( biology ). Since its domestication in India at least 3,500 years ago , its seeds have become a common food grain in Asia , Africa , and Latin America .. domestication. domestication. India. India. food grain. food grain. It is consumed on a large scale mainly in south Asia and is a major source of protein for the population of that subcontinent .. south Asia. south Asia. protein. protein. that subcontinent. Indian subcontinent
not_related.