Text: Were they simply tombs for pharaohs, or astronomical markers to aid the quantifying of time; were they built to concentrate a natural energy source, or were they not built by humans at all, a sign that an alien intelligence visited the earth many thousands of years ago?
Entailment: Were the pyramids the work of a great civilization in order to glorify their rulers or are this built for a hidden reason.
Contradiction: The Egyptians left clear instructions for why they did what they did.