Using the following facts as a Prolog database:

Define rules for the following relationships:

d$)$ Nephew $//$

s$.$ nephew $(,B)$

& means $$ is nephew of $B$

&

nepher $(A,B)$:$-$

e$)$ Cousins

$$ cousins $(,B)$

& means $$ is cousin of $B$

&

cousin $(A,B)$:$-$

Test your goals for each relationship with suitable variables$/$constants$.$

You may need to write additional predicates for your relationships.

Use 'findall' for multiple results.