Forming simple questions using Whose - Who (من)

Who (من) ?
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Examples:
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مَنْ أَكَلَ التفاّحَة ؟

Who did eat the apple?

M'n-akala-atto-fa-hah?

مَنْ هِيَ الخنسَاءُ ؟

Who is Alkhansa?

M'n he-ya- al-khan-saou ?

قَلَم ُمنْ هذَا ؟

Whose pen is this?

Qala-mo-m'n-ha-za?