The vision of the Semantic Web is that computers as well as humans will be able to leverage the information on the web. One important capability that would facilitate this goal is using Knowledge Graph and Ontology. An ontology can serve as a underlying schema of Knowledge Graphs to enable logical inference and reasoning. An ontology is a representation of the concepts in a domain and how they relate to one another. Creating an ontology involves a lot of design decisions, which tend to be influenced by the designers’ backgrounds and the application they are targeting.