Assertion: table | /r/CreatedBy | geographer ptolemy
Facets:
value: in egypt
type: LOCATION
value: during the 2nd century ad
type: TEMPORAL
Source sentences:
text: The table of chords, created by the Greek astronomer, geometer, and geographer Ptolemy in Egypt during the 2nd century AD, is a trigonometric table in Book I, chapter 11 of Ptolemy's Almagest, a treatise on mathematical astronomy.