أَقَامَ زَيْدٌ
Did Zayd stand up?
Here the speaker asks whether standing occurred on Zayd’s part. The verb and subject are intelligible, but the predicative relation awaits assent, making this a question of taṣdīq.
The initial a- is the interrogative particle; qāma is a past verb; Zaydun is its subject. “Yes” or “no” directly answers the question; identifying a different subject is not the primary request.