Premise:
"Last March, surgeons operated in vivo on a 6-month-old fetus suffering from excessive water in his brain."
Hypothesis: The operation on the 6 month old fetus last March was seen as a great success.

it is not possible to tell

Premise:
"That I miss her."
Hypothesis: Sometimes I miss her.

it is not possible to tell

Premise:
"Obviously, the prisoner would not be likely to go to that drawer?" 146 "Perhaps not.""
Hypothesis: What they were after was the jewels.
it is not possible to tell