Spouse and No child.

In this case, it means that there is no heir of the first rank

Then, the next question,

Second rank

Is there a relative superior such as the lost parent, grandparents, great-grandparents, grandparents and grandparents? (Hereinafter referred to as linear ascendant)

As an option here,

(Y) Yes. There is a  linear ascendant

(N) No. There is no  linear ascendant