- Properties in use
	- ```sparql
	  SELECT DISTINCT ?property 
	  WHERE { ?s ?property ?o . } 
	  ```
	  #Query
- Properties ranked by use
	- ```sparql
	  SELECT ?p (COUNT (DISTINCT ?o) AS ?nv)
	  
	  WHERE {
	      ?s ?p ?o 
	  }
	  
	  GROUP BY ?p
	  ORDER BY DESC (?nv)
	  
	  ```
	  #Query #COUNT #[[GROUP BY]]
- Classes
	- ```sparql
	  SELECT DISTINCT ?class 
	  WHERE { ?s a ?class . } 
	  ```
	  #Query
- All triples
	- Asking for all triples makes sense when you know that the dataset is small.
	- Most triple stores will give all accessible data with `SELECT * {?s ?p ?o}` but some my give only the triples in the default graph so it's better to ask explicitly for all the triples in all named graphs.
		- ```sparql
		  SELECT ?g ?s ?p ?o
		  WHERE
		  {
		  	{ ?s ?p ?o }
		  	UNION
		  	{ GRAPH ?g { ?s ?p ?o } }
		  }
		  ```#Query #GRAPH #UNION
	- Total number of triples (from all graphs)
		- ```sparql
		  SELECT (COUNT (?s) as ?Number_of_triples)
		  
		  {
		     { ?s ?p ?o } UNION { GRAPH ?g { ?s ?p ?o } }
		  }
		  ```
		  #Query #COUNT #GRAPH #UNION
	- Total number of triples (from all graphs) per graph
		- ```sparql
		  SELECT ?g (COUNT (?s) as ?Number_of_triples)
		  
		  
		  {
		     { ?s ?p ?o } UNION { GRAPH ?g { ?s ?p ?o } }
		  }
		  
		  ORDER BY DESC (?Number_of_triples)
		  
		  ```
		  #Query #COUNT #GRAPH #UNION
- Sample entity and count
	- ```sparql
	  SELECT (SAMPLE(?s) as ?sample) (count(?s) as ?count) ?class
	  
	  WHERE {?s a ?class }
	  
	  GROUP BY ?class
	  ORDER BY DESC(?count)
	  ```
	  #Query #SAMPLE