XML Interlingua for Example
<erule rulelabel="leadTimeRule1">
<cliteral predicate="orderModificationNotice">
<variable name="?Order"/>
<function name="days14"/>
<fcliteral predicate="preferredCustomerOf">
<variable name="?Buyer"/>
<variable name="?Seller"/>
<fcliteral predicate="purchaseOrder">
<variable name="?Order"/>
<variable name="?Buyer"/>
<variable name="?Seller"/>