Read the following paragraph:
"There are a number of reasons why capital punishment is becoming rare in the United States. Public support for executions is dropping, as it should. Capital punishment costs the state more money than keeping a person in prison for life. Falling crime rates make the death penalty seem less useful. Drug companies have begun to prohibit the use of their products in executions. Most powerful of all, there is a growing acknowledgement that the death penalty is handed down inconsistently, and that innocent men may have died because of legal incompetence or malice."
Which sentence in the paragraph expresses a fact rather than an opinion?