The introduction of the euro has dismantled barriers to cross-border trading and enhanced risk sharing and opportunities for diversification.
Can we say the following?
The introduction of the euro has been opposed.

no

ISSUE 172, March 5, 2009: The world has lost Manx in the Isle of Man, Ubykh in Turkey and last year Alaska's last native speaker of Eyak, Marie Smith Jones, died, taking the Aboriginal language with her. Of the 6,900 languages spoken in the world, some 2,500 are endangered, the UN's cultural agency UNESCO said this week as it released its latest atlas of world languages. That represents a multi-fold increase from the last atlas compiled in 2001 which listed 900 languages threatened with extinction. But experts say this is more the result of better research tools than of an increasingly dire situation for the world's many tongues.
Can we say the following?
2,500 languages are in danger of extinction.

yes

WINNENDEN, Germany A teenage gunman killed 15 people, most of them female, on Wednesday in a rampage that began at a school near Stuttgart in southern Germany and ended in a nearby town, where he then killed himself after the police wounded him. The attack left Germany, which tightened tough gun controls after a similar attack at a school seven years ago, struggling to understand the carnage that had again befallen it, a country with relatively little violent crime. In 2002, a gunman killed 16 people before killing himself at a school in Erfurt, in eastern Germany.
Can we say the following?
In 2002 near Stuttgart a boy shot 16 people.

no

The men, Dritan Duka, 30, Shain Duka, 28, and Eljvir Duka, 25, all illegal immigrants, were each sentenced to life without the possibility of parole. The three, who operated a roofing business in Cherry Hill, N.J., were among five foreign-born Muslims convicted in December of planning an attack at the base, about 40 miles east of Philadelphia. The attack was never carried out. The other two men who were convicted, Mohamad Shnewer, a Jordanian-born taxi driver from Philadelphia, and Serdar Tatar, a convenience-store clerk from Turkey, are to be sentenced on Wednesday.
Can we say the following?
Eljvir Duka comes from Turkey.
no