Premise: Julius my own cousin!"

Hypothesis: Julius is my relative.
Answer: yes

Premise: Strangest of all, his lower jaw appeared to be encased in a curved plate of iron.

Hypothesis: He encased his jaw in iron to protect it from attacks.
Answer: it is not possible to tell

Premise: i used to but i don't anymore maybe once or twice a year

Hypothesis: At one point I used to but maybe only once or twice a year.
Answer: yes

Premise: His eyes were small and cunning, and shifted their glance under her direct gaze.

Hypothesis: He was embarrassed and couldn't look her in the eyes.
Answer: it is not possible to tell