Question: From a research point of view, this is the first time we could identify what appears to be typical Parkinson's disease cases before people develop symptoms, says Mayo Clinic neuroscientist Matthew Farrer. "We know if someone inherits the mutation they are going to get Parkinson's disease." The mutation was discovered by sequencing the LRRK2 gene in families with Parkinson's from the US, Norway, Ireland and Poland.

A genetic mutation has been linked with Parkinson's disease.
Answer: yes
Question: Nineteen of the European Union's 25 member states were voting in the biggest transnational elections ever held, and the first for the EU since the bloc's expansion into the former communist eastern Europe on May 1.

Nearly 350 million people were eligible to vote since the EU took in 10 new members on May 1.
Answer: no
Question: Waste in the ponds produced by leaching gold from ore is a source of potential environmental dangers.

Mine waste-water poses an environmental hazard.
Answer:
yes