With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Asia has meteorological phenomena.
text_B: When Khalid ibn Walid left from Ayn al-Tamr to Dumat Al-Jandal for the help of Iyad ibn Ghanm , the Persian court believed that Khalid had returned to Arabia with a large part of his army .. Khalid ibn Walid. Khalid ibn Walid. Dumat Al-Jandal. Dumat Al-Jandal. Iyad ibn Ghanm. Iyad ibn Ghanm. Persian. Persian Empire. The Persians decided to throw the Muslims back into the desert and regain the territories and the prestige which the Persian Empire had lost .. Persian Empire. Persian Empire. Persian. Persian Empire. The Persians had resolved not to fight Khalid again , but they were quite prepared to fight the Muslims without Khalid ibn al-Walid .. Khalid ibn al-Walid. Khalid ibn al-Walid
not_related.