Sculptor Dangles Clues to Stubborn Secret in CIA's Backyard

What do you want to bet that it's not the word "Berlin" but pieces of two adjoining words like "number line?"

http://www.wordbyletter.com/suffixes/words_finishing_with_be... http://www.wordbyletter.com/prefixes/words_starting_with_lin...

Previously:

http://news.ycombinator.com/item?id=573192