About: http://webisa.webdatacommons.org/288721604

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	Grade IV tumors usually cannot be cured.The following types of tumors can form in the brain or spinal cord:Astrocytic TumorsAn astrocytic tumor begins in star-shaped brain cells called astrocytes, which help keep nerve cells healthy.
http://www.w3.org/ns/prov#wasQuotedFrom	yalecancercenter.org