[wip] Result for expression validation.
[wip] Result for expression validation.

OpenBEL/openbel-server,nbargnesi/openbel-server,OpenBEL/openbel-server,OpenBEL/openbel-server,OpenBEL/openbel-api,OpenBEL/openbel-api,nbargnesi/openbel-server,OpenBEL/openbel-api,nbargnesi/openbel-server,OpenBEL/openbel-api