That's rather simple agreement. The languages I know of are compatible with that. They either have a similar or simpler number agreement, at least for the third

That's rather simple agreement. The languages I know of are compatible with that. They either have a similar or simpler number agreement, at least for the third person. English has better examples, e.g. a vs an. If you template some text, you need to write agreement rules for that: "Are you interested in [a/an] {product}?"