Issue description

In blaze logs I can see it fails to insert a specific KC due to the malformed query, looks like some char needs to be escaped.
UAL - did:dkg:otp:2043/0x8f678eb0e57ee8a109b295710e23076fa3a443fe/3620785

ERROR: BigdataRDFServlet.java:216: cause=java.util.concurrent.ExecutionException: org.openrdf.query.MalformedQueryException: Lexical error at line 19, column 145. Encountered: "U" (85), after : ""@ChatDKG, how can we train AI Agents to reason with transparency? \", query=SPARQL-UPDATE: updateStr=
PREFIX schema: http://schema.org/
INSERT DATA {
...

log - malformed_query_insert.txt

Specifications

• Node version: 8.0.11+hotfix.1
• Platform: Ubuntu
• Node wallet:
• Node libp2p identity: