Please read the following table in Markdown format and then answer the question according to the table. Table cells in one row are seperated by '|', and different rows are seperated by '
'.

Table:
| English | Proto-Semitic | Akkadian | Arabic | Aramaic | Hebrew | Geez | Mehri |
| --- | --- | --- | --- | --- | --- | --- | --- |
| father | *ʼab- | ab- | ʼab- | ʼaḇ-āʼ | ʼāḇ | ʼab | ḥa-yb |
| heart | *lib(a)b- | libb- | lubb- | lebb-āʼ | lēḇ(āḇ) | libb | ḥa-wbēb |
| house | *bayt- | bītu, bētu | bayt- | bayt-āʼ | báyiṯ, bêṯ | bet | beyt, bêt |
| peace | *šalām- | šalām- | salām- | šlām-āʼ | šālôm | salām | səlōm |
| tongue | *lišān-/*lašān- | lišān- | lisān- | leššān-āʼ | lāšôn | lissān | əwšēn |
Question:
If in arabic it is salām-, what is it in proto-semitic?
Answer:
*šalām-