Please send a reminder to my husband to pick the kids up at 3; alert him 30 minutes before.
[IN:CREATE_REMINDER Please send a reminder to [SL:PERSON_REMINDED [IN:GET_CONTACT [SL:CONTACT_RELATED my ] [SL:TYPE_RELATION husband ] ] ] to [SL:TODO [IN:GET_TODO [SL:TODO pick the kids up ] [SL:DATE_TIME at 3 ] ] ] ; alert him [SL:DATE_TIME 30 minutes before ] . ]