Learn Turkish: Rehber müzeyi işaret etti. - The guide pointed out the museum.

In Turkish, the compound verb işaret etmek can take either the accusative or the dative case, but the meaning shifts slightly. With the accusative (müzeyi işaret etti), it means "to point something out" or "to indicate" it. If we used the dative (müzeye işaret etti), it would mean "pointed at or to the museum," focusing more on the physical direction of the gesture.

This lesson focuses on factive clauses with dair or hakkında. How would we change this sentence to say "a claim about the guide pointing out the museum"?

You would nominalize the verb using -dIk. The subject takes the genitive (Rehberin) and the verb takes -dIk plus the possessive suffix (işaret ettiği). To add "about", you can attach the dative case and use dair (Rehberin müzeyi işaret ettiğine dair bir iddia) or use hakkında right after the possessive (Rehberin müzeyi işaret ettiği hakkında bir iddia).

Why is the compound verb işaret etti written as two separate words rather than one?

It is formed by combining the noun işaret (sign/mark) with the auxiliary verb etmek (to do/make). Under Turkish spelling rules, compound verbs with etmek or olmak are only written as a single combined word if the root noun undergoes a sound change (such as a dropped vowel or a doubled consonant). Since işaret remains unchanged, the words must be written separately.