Why is “أَخُوكَ قَادِمٌ” a model of an ibtidāʾī report?

Aḍrub al-Khabar: Ibtidāʾī, Ṭalabī and Inkārī Reports

• Because it lacks a predicate
• Because it negates the proposition
• Because it is an inshāʾ sentence
• Because it is a complete report without an independent emphatic marker