Problem: Printed circuit board:

Through-hole manufacture adds to board cost by requiring many holes to be drilled accurately, and limits the available routing area for signal traces on layers immediately below the top layer on multi-layer boards since the holes must pass through all layers to the opposite side. Once surface-mounting came into use, small-sized SMD components were used where possible, with through-hole mounting only of components unsuitably large for surface-mounting due to power requirements or mechanical limitations, or subject to mechanical stress which might damage the PCB.

What will not damage the PCB?
---
A: unanswerable

Problem: Swaziland:

The Swazi bicameral Parliament or Libandla consists of the Senate (30 seats; 10 members appointed by the House of Assembly and 20 appointed by the monarch; to serve five-year terms) and the House of Assembly (65 seats; 10 members appointed by the monarch and 55 elected by popular vote; to serve five-year terms). The elections are held every five years after dissolution of parliament by the king. The last elections were held on 20 September 2013. The balloting is done on a non-party basis in all categories. All election procedures are overseen by the elections and boundaries commission.

What is done on a party basis?
---
A: unanswerable

Problem: Samurai:

In Japanese, they are usually referred to as bushi (?, [bu.i]) or buke (?). According to translator William Scott Wilson: "In Chinese, the character was originally a verb meaning "to wait upon" or "accompany persons" in the upper ranks of society, and this is also true of the original term in Japanese, saburau. In both countries the terms were nominalized to mean "those who serve in close attendance to the nobility", the pronunciation in Japanese changing to saburai. According to Wilson, an early reference to the word "samurai" appears in the Kokin Wakashu (905914), the first imperial anthology of poems, completed in the first part of the 10th century.

What are samurai usually called in Japanse?
---
A: bushi (?, [bu.i]) or buke (?)

Problem: Insect:

Late Carboniferous and Early Permian insect orders include both extant groups, their stem groups, and a number of Paleozoic groups, now extinct. During this era, some giant dragonfly-like forms reached wingspans of 55 to 70 cm (22 to 28 in), making them far larger than any living insect. This gigantism may have been due to higher atmospheric oxygen levels that allowed increased respiratory efficiency relative to today. The lack of flying vertebrates could have been another factor. Most extinct orders of insects developed during the Permian period that began around 270 million years ago. Many of the early groups became extinct during the Permian-Triassic extinction event, the largest mass extinction in the history of the Earth, around 252 million years ago.

To what measurement, in cm, did the wingspans of giant dragonfly-like forms reach?
---
A:
55 to 70