Question: What eating disorder is characterized by eating substances such as clay and sand?
SPARQL:
PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> 
PREFIX yago: <http://dbpedia.org/class/yago/>
SELECT ?uri WHERE
{
  ?uri rdf:type yago:EatingDisorders .
  ?uri text:"characterized by" "appetite for clay and sand" .
}