Question: what are the  signs and cause of carbon tetrachloride?
Paraphrase: What are the symptoms and root causes associated with carbon tetrachloride?
SPARQL (Wikidata): SELECT ?answer WHERE { wd:Q225045 wdt:P1542 ?X . ?X wdt:P780 ?answer}
Answer: vomiting, Nausea, ataxia, kidney disease, somnolence, hepatotoxicity, irritant dermatitis, central nervous system depression, dizziness, eye irritation