is my sibling online
[IN:GET_AVAILABILITY [SL:CONTACT [IN:GET_CONTACT [SL:CONTACT_RELATED my ] [SL:TYPE_RELATION sibling ] ] ] ]
is my sibling online
[IN:GET_AVAILABILITY [SL:CONTACT [IN:GET_CONTACT [SL:CONTACT_RELATED my ] [SL:TYPE_RELATION sibling ] ] ] ]