With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Semitic languages are used in North Africa.
text_B: Magnalium is an aluminium alloy with magnesium and small amounts of nickel and tin .. aluminium. aluminium. magnesium. magnesium. nickel. nickel. tin. tin. Some alloys , intended for particular uses at the cost of poor corrosion resistance , may consist of up to 50 % magnesium .. magnesium. magnesium. corrosion resistance. corrosion resistance. It finds use in engineering and pyrotechnics .. pyrotechnics. pyrotechnics
not_related.