Premise:
"okay then i'm see i'm about twenty years older"
Hypothesis: Notice that I'm around 20 years older, but still younger than I appear.

it is not possible to tell

Premise:
"It still holds on to its original name of Krutenau (Vegetable Waterway)."
Hypothesis: Whilst it still currently retains its original name, its title may change in the future.

it is not possible to tell

Premise:
" "Stage was jumped yesterday on th' Sonora road,"Callie volunteered."
Hypothesis: The stage was jumped by a team of bandits.
it is not possible to tell