diff --git a/reference/workflow.ttl b/reference/workflow.ttl
index 536cd620..e86af94c 100644
--- a/reference/workflow.ttl
+++ b/reference/workflow.ttl
@@ -145,16 +145,6 @@ Concurrent tasks may or may not communicate. Communication is represented as a s
                                            :EMMO_967080e5_2f42_4eb2_a3a9_c58143e835f9 "A procedure that has at least two procedures (tasks) as proper parts."@en .
 
 
-###  https://w3id.org/emmo#EMMO_83a460aa_5826_4fbb_93e8_d73d0df25757
-:EMMO_83a460aa_5826_4fbb_93e8_d73d0df25757 rdf:type owl:Class ;
-                                           rdfs:subClassOf :EMMO_36c79456_e29c_400d_8bd3_0eedddb82652 ,
-                                                           :EMMO_5848e476_2768_4988_98f9_9053c532307b ;
-                                           skos:prefLabel "EmbarassinglyParallelWorkflow"@en ;
-                                           :EMMO_157fdf31_6387_42be_8e72_10530519214a "https://w3id.org/emmo/raw/1.0.0-rc3/doc/figs/PureParallelWorkflow.png"^^xsd:anyURI ;
-                                           :EMMO_31252f35_c767_4b97_a877_1235076c3e13 "An embarassingly parallel workflow occurs when the concurrent tasks may run completely independently by each other."@en ;
-                                           :EMMO_967080e5_2f42_4eb2_a3a9_c58143e835f9 "A parallel workflow in which concurrent (parallel) tasks are not communication each other."@en .
-
-
 ###  https://w3id.org/emmo#EMMO_8a2a1cbc_dfc3_4e6c_b337_00ee56fd438a
 :EMMO_8a2a1cbc_dfc3_4e6c_b337_00ee56fd438a rdf:type owl:Class ;
                                            rdfs:subClassOf <https://w3id.org.org/emmo#EMMO_180bd73b_0c5d_4b1f_ba12_4309c5a50d49> ,