Premise:
"Tuthmosis I was the first Pharaoh to be entombed there c.1490 b.c. choosing a narrow valley out of site of the capital as a secret and supposedly safe location for his resting place, cut deep into the rock."
Hypothesis: The pharaoh was never buried, he died in the desert and he was left there to rot.

no

Premise:
" The next second, he stood manacled in a long line of men loaded with heavy stones."
Hypothesis: The heavy stones were an exotic variety of granite.

it is not possible to tell

Premise:
"What do you mean, helping us?"
Hypothesis: What do you mean, that he is working with us?
it is not possible to tell