Let my brother, Jeff, know that dinner is at Sally's at 6:00.
[IN:SEND_MESSAGE Let [SL:RECIPIENT [IN:GET_CONTACT [SL:CONTACT_RELATED my ] [SL:TYPE_RELATION brother ] , [SL:CONTACT Jeff ] ] ] , know that [SL:CONTENT_EXACT dinner is at Sally 's at 6 : 00 ] . ]