Premise:
"HKTA also has trail maps and sponsors the Guided Nature Walks, led by rangers, that include hikes in all the different regions of Hong Kong."
Hypothesis: HKTA has ranger led Guided Nature Walks that include maps and hikes throughout the regions of Hong Kong with plenty of beautiful serene areas

it is not possible to tell

Premise:
"Saloon brawling with the army ain't going to change that."
Hypothesis: Beating up the army in bars will be the only way to change that.

no

Premise:
"The result is a complex stalemate."
Hypothesis: The negotiations are moving forward nicely.
no