ClerezzaSparqlObject argument1 = (ClerezzaSparqlObject) adapter.adaptTo(numericFunctionAtom1,
ConstructQuery.class);
ClerezzaSparqlObject argument2 = (ClerezzaSparqlObject) adapter.adaptTo(numericFunctionAtom2,
ConstructQuery.class);
Expression lhsOperand = (Expression) argument1.getClerezzaObject();
Expression rhsOperand = (Expression) argument2.getClerezzaObject();
BinaryOperation binaryOperation = new BinaryOperation("+", lhsOperand, rhsOperand);
return (T) new ClerezzaSparqlObject(binaryOperation);