Premise:
"oh yeah most of my my forms of exercise come in the form of a five year old and a two year old"
Hypothesis: They are my kids.

it is not possible to tell

Premise:
"In addition, the signature should be linked to the data in such a manner that if the data are changed, the signature is invalidated."
Hypothesis: the signature should not be linked to the data

no

Premise:
"A few choice shell-shots would send them into quick retreat."
Hypothesis: They would not retreat under any circumstances.
no