Stadt und Tempel von Elephantine. Methodological approach to the project "Realities of Life" (Lebenswirklichkeiten) and its first application during the 43rd and 44th excavation campaign on Elephantine Island - Sigl, Johanna, 1981- (Mitteilungen des Deutschen Archäologischen Instituts, Abteilung Kairo, 74 (2018), 2018)