-$hFileEntity = fopen("entity.csv", "w");
-$hFileEntityLabel = fopen("entity_label.csv", "w");
-$hFileEntityDescription = fopen("entity_description.csv", "w");
-$hFileEntityAlias = fopen("entity_alias.csv", "w");
-$hFileEntityLink = fopen("entity_link.csv", "w");
-$hFileEntityProperty = fopen("entity_property.csv", "w");
+$hFileEntity = fopen('entity.csv', 'w');
+$hFileEntityLabel = fopen('entity_label.csv', 'w');
+$hFileEntityDescription = fopen('entity_description.csv', 'w');
+$hFileEntityAlias = fopen('entity_alias.csv', 'w');
+$hFileEntityLink = fopen('entity_link.csv', 'w');
+$hFileEntityProperty = fopen('entity_property.csv', 'w');