Q: I know that the answer to the question "Two advantages of the underground tunnel and bunker system were that the bunkers could be reoccupied after being knocked out and what else?" is in "From early 1944 until the days leading up to the invasion, Kuribayashi transformed the island into a massive network of bunkers, hidden guns, and 11 mi (18 km) of underground tunnels. The heavy American naval and air bombardment did little but drive the Japanese further underground, making their positions impervious to enemy fire. Their pillboxes and bunkers were all connected so that if one was knocked out, it could be reoccupied again. The network of bunkers and pillboxes greatly favored the defender.". Can you tell me what it is?
A: impervious to enemy fire

Q: I know that the answer to the question "What was smaller the Pinkertons or the sheriffs" is in "In the American Old West, policing was often of very poor quality.[citation needed] The Army often provided some policing alongside poorly resourced sheriffs and temporarily organized posses.[citation needed] Public organizations were supplemented by private contractors, notably the Pinkerton National Detective Agency, which was hired by individuals, businessmen, local governments and the federal government. At its height, the Pinkerton Agency's numbers exceeded those of the United States Army.[citation needed]". Can you tell me what it is?
A: sheriffs

Q: I know that the answer to the question "What was lower than the natinoal average?" is in "In January 2007, the average annual salary in the city was 22,267. This was 1,700 lower than the national average and 3,800 less than the average for the South East.". Can you tell me what it is?
A: the average annual salary in the city

Q: I know that the answer to the question "What was the main purpose of the Schanze?" is in "The city grew out towards the west of the boundaries of the peninsula formed by the River Aare. The Zytglogge tower marked the western boundary of the city from 1191 until 1256, when the Kafigturm took over this role until 1345. It was, in turn, succeeded by the Christoffelturm (formerly located close to the site of the modern-day railway station) until 1622. During the time of the Thirty Years' War, two new fortifications the so-called big and small Schanze (entrenchment) were built to protect the whole area of the peninsula.". Can you tell me what it is?
A:
protect