Premise: The local Theban god Amon became intertwined with Ra creating the deity Amon Ra and around 1800 b.c. , the female Osiris cult developed into a main deity.
Hypothesis: The female Osiris cult developed into a main deity around 1800 b.c. , as the local Theban god Amon became interwined with Ra, creating the deity Amon Ra. 
Label: entailment