41. Which item of clothing is usually worn by a Scotsman at a wedding?
42. Which American manufactured submachine gun was informally known by the American soldiers that used it as "Grease Gun"?
43. What kind of aircraft was developed by Igor Sikorsky in the United States in 1942?
44. What type of animal was Harambe, who was shot after a child fell into it's enclosure at the Cincinnati Zoo?
45. How long did it take the motorized window washers of the original World Trade Center to clean the entire exterior of the building?