Questions & Answers about Alƙalin wasan ya busa sau biyu.
It is a noun phrase made of two nouns:
- alƙali = referee, judge
- wasa = game, match
When alƙali is followed by another noun, it takes a linker -n, giving alƙalin. So alƙalin wasan means something like the referee of the game or the match referee.
They look the same, but here they do different jobs:
- alƙali-n: the -n links alƙali to the following noun
- wasa-n: this -n marks wasa as definite, so wasan = the game/match
So the first -n is a connector, while the second one is part of making the second noun definite.
Ya is the 3rd-person masculine singular subject marker used with the perfective/completed action form.
So in this sentence, it tells you that the subject is:
- he
- singular
- masculine
- doing a completed action
Because alƙali is treated as masculine singular, ya is the form you expect here.