Premise:
"Don't worry about the risk to endangered animal species most Egyptian ivory is camel or donkey bone, not elephant tusk."
Hypothesis: Ivory sold in Sudan is sometimes made from elephant tusks.

it is not possible to tell

Premise:
"Delightful as the vineyards of Burgundy may be, the landscape and villages of certain other routes des vins may be considered prettier ' those of Alsace, for instance."
Hypothesis: Burgundy does not necessarily have the prettiest landscape and village.

yes

Premise:
"Tomb 57, that of Khaemhat, was decorated with statues of himself and his family very rare for tombs of his class."
Hypothesis: Tomb 57 is a very common tomb.
no