n To celebrate Leonardo da Vinci’s birthday last April, Internet search engine Google.com replaced one of the o’s in its home-page logo with the image of the Mona Lisa.

n Three dogs have been awarded a star on the Hollywood Walk of Fame: Lassie, Rin Tin Tin and the now-forgotten German shepherd Strongheart — one of the earliest canine stars of the silent-film era.

In the Army marching song “The Caissons Go Rolling Along,” which starts “Over hill, over dale,” what exactly are caissons?

A) Infantry troops

B) Drill instructors

C) Giant armored tanks

D) Artillery wagons

Wednesday’s answer: In the ancient English epic poem “Beowulf,” the monster Grendel is described as a descendant of Cain, eldest son of Adam.