Seasonal affective disorder (SAD), a type of depression, is a debilitating problem that interferes with the quality of life of thousands of patients, especially during the fall, winter and early spring. This syndrome seems to be a worldwide phenomenon and occurs cross culturally, especially in countries far from the equator.
Can we say the following?
Seasonal affective disorder (SAD) is a worldwide disorder.

yes


An Iraqi official reported today, Saturday, that 68 Iraqi civilians were killed as a result of the American and British bombing on Iraq and that their funerals were held today in Baghdad.
Can we say the following?
The 68 civilians killed as a result of the Anglo-American bombing of Iraq, were buried today in Baghdad.

yes


Representatives from 142 nations are expected to sit down in Doha Qatar, next Friday for the World Trade Organization's (WTO) fourth Ministerial Conference.
Can we say the following?
Representatives of the 142 member countries of the World Trade Organization will gather in Doha, Qatar, next Friday.

yes


Between 143 and 152 people have now been hospitalized in the wake of Monday's train derailment near Lviv, Ukraine, and subsequent phosporous cloud.  According to the Ukrainian Healthcare Ministry's spokesperson, Igor Gerych, 43 of the injured are children, 13 are firemen and three are medical  personnel. None are considered to be in mortal danger, yet some cases remain at medium risk level.
Can we say the following?
A railway disaster caused a fire.


no