def diff(diff: DiffModel, document: provo.ProvDocument):
print_msg(" Exporting basic trial comparison information")
_create_trial_info(document, diff.trial1, "_{}".format(diff.trial1.id))
_create_trial_info(document, diff.trial2, "_{}".format(diff.trial2.id))
document.wasInfluencedBy("trial{}Execution".format(diff.trial2.id),
"trial{}Execution".format(diff.trial1.id),
"trial{}ComparedTo{}".format(diff.trial2.id, diff.trial1.id),
[(provo.PROV_TYPE, "comparison")])
