W3C's HTML (-RDFa) validation passes:

Hello there,
Can someone help me to know if we can apply the  W3C's HTML (RDFa) 
validation passes: http://validator.w3.org/#validate_by_input to 
'schema.org/'  webpages (or submission proposals)?
I saw that our colleagues of " w3c semweb hcls" are perfom this check on 
their proposals-- it's a just a question poping up!
Kind Regards,

Marc Twagirumukiza | Agfa HealthCare
Senior Clinical Researcher | HE/Advanced Clinical Applications Research
T  +32 3444 8188 | M  +32 499 713 300