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Date: 4-2-2022
1034
Date: 2023-09-19
507
Date: 2023-08-04
797
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initial symbol
The first, undefined term in a GENERATIVE GRAMMAR, employed in early PHRASE-STRUCTURE GRAMMARS, which appears on the left-hand side of the first REWRITE RULE. Standing for SENTENCE, the highest-level CONSTRUCTION recognized by the grammar, it has been symbolized as Σ, S′ or CP. The contrast implied is with TERMINAL symbols, the items which occur in a terminal STRING generated by the grammar. Other starting-points than sentence have occasionally been suggested.
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مخاطر عدم علاج ارتفاع ضغط الدم
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اختراق جديد في علاج سرطان البروستات العدواني
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مدرسة دار العلم.. صرح علميّ متميز في كربلاء لنشر علوم أهل البيت (عليهم السلام)
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