"I write into that book, which is on the table."
Translation:Abba a könyvbe írok, amelyik az asztalon van.
No, for some reason, that is not correct. I am trying to come up with an explanation for this but it is not easy. Anyway, in this second clause (relative clause?), if the verb is "van", it can not come immediately after "amelyik" (relative pronoun?). Something else has to come first.