I am looking for a medical dataset. I Need a list of all diseases, symptoms, categories, causes, body part relations. I don't know how to get it. Actually I've found some semantic sources like DO and SYMP ontologies. But I am not familiar with SPARQL that is why I don't know how to extract needed information from them. Also, I've found DIsgnet database. it is pretty good. But it doesn't hold the symptoms. Need your suggestions. How can I get these data?