<prompt> Etsa qeto ea karolo ea bone e khethehileng ho latela lintlha tse 4 tse latelang.Iron, Nickel, lead, Mercury  <response>: Instruction in English: Determine the 4th special element given the following 4 elements. . Response in English: Based on the given elements, which are all metals, the 4th special element could be another metal such as Copper, Zinc or Gold. However, without more specific criteria or context, it is not possible to determine the 4th special element with certainty. . Response in Sesotho: Ho ipapisitsoe le likarolo tse fanoeng, tseo kaofela e leng litšepe, karolo ea 4 e khethehileng e ka ba tšepe e ngoe e kang Koporo, Zinc kapa Khauta. Leha ho le joalo, ntle le mekhoa e tobileng kapa moelelo oa taba, ha ho khonehe ho tseba hore na ntho ea bone e khethehileng ke efe. 