Please answer this: Extract the answer to the question from the following context. Question: How old is the Somali language? Context: In addition to Somali, Arabic, which is also an Afro-Asiatic tongue, is an official national language in both Somalia and Djibouti. Many Somalis speak it due to centuries-old ties with the Arab world, the far-reaching influence of the Arabic media, and religious education. Somalia and Djibouti are also both members of the Arab League.
++++++++
Answer: centuries-old


Please answer this: Extract the answer to the question from the following context. Question: If it is not used as an allow, what is the form in which copper is used? Context: The major applications of copper are in electrical wires (60%), roofing and plumbing (20%) and industrial machinery (15%). Copper is mostly used as a pure metal, but when a higher hardness is required it is combined with other elements to make an alloy (5% of total use) such as brass and bronze. A small part of copper supply is used in production of compounds for nutritional supplements and fungicides in agriculture. Machining of copper is possible, although it is usually necessary to use an alloy for intricate parts to get good machinability characteristics.
++++++++
Answer: pure metal


Please answer this: Extract the answer to the question from the following context. Question: __ was spread to Sierra Leone by Canadian missionaries. Context: Presbyterians distinguish themselves from other denominations by doctrine, institutional organization (or "church order") and worship; often using a "Book of Order" to regulate common practice and order. The origins of the Presbyterian churches are in Calvinism. Many branches of Presbyterianism are remnants of previous splits from larger groups. Some of the splits have been due to doctrinal controversy, while some have been caused by disagreement concerning the degree to which those ordained to church office should be required to agree with the Westminster Confession of Faith, which historically serves as an important confessional document – second only to the Bible, yet directing particularities in the standardization and translation of the Bible – in Presbyterian churches.
++++++++
Answer:
Calvinism