De or het sponsorovereenkomst?

The correct Dutch article is:

de sponsorovereenkomst

How to use sponsorovereenkomst

the sponsorovereenkomstde sponsorovereenkomst
this sponsorovereenkomstdeze sponsorovereenkomst
that sponsorovereenkomstdie sponsorovereenkomst
our sponsorovereenkomstonze sponsorovereenkomst
your sponsorovereenkomstjouw sponsorovereenkomst
every sponsorovereenkomstelke sponsorovereenkomst
which sponsorovereenkomst?welke sponsorovereenkomst?
a big sponsorovereenkomst / the big sponsorovereenkomsteen grote sponsorovereenkomst, de grote sponsorovereenkomst