Human beings differ from other animals in that they have reason.

The melting of the ice cap is a serious concern for global warming.

The shoppers stood in a line.

The city dedicated a monument in honor of the general.

Why did he fail in business?

He was a formidable athlete in his prime.

The clandestine operations were only known to a select few, those in the know were sworn to utmost secrecy.

The possibilities are endless, ad infinitum.

I am in favor of this proposal.