Premise: and one of the uh he has inputs or gets inputs from a an environmental engineer

Hypothesis: Nobody gives him any input, he has to figure it out alone.
Answer: no

Premise: The Model of Acidification of Groundwater in Catchments (MAGIC) is used to examine changes in surface freshwater chemistry as indicated by changes in acid neutralizing capacity (ANC) in the waterbody.

Hypothesis: MAGIC effectively monitors changes in surface freshwater chemistry.
Answer: it is not possible to tell

Premise: And how would you know? asked Adrin.

Hypothesis: Adrin was asking how you knew.
Answer: yes

Premise: Julius reappeared some minutes later, having reassured Albert and rewarded him lavishly for his services.

Hypothesis: Julius reappeard after reassuring Albert.
Answer: yes