Q: pneumatic elevators and conveyors, for bulk materials (excl. those for civil aircraft of subheading 8428.20.10 and those for use in agriculture)

A: Pneumatic elevators and conveyors, for bulk materials (excl. those for civil aircraft of subheading 8428.20.10 and those for use in agriculture)
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Q: the houses seem to be fortified. within windows are wider, as the windows of the castles, para protegerse del exterior.

A: The houses seem to be fortified. Within windows are wider, as the windows of the castles, para protegerse del exterior.
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Q: although the high technology industrial complex known as the silicon valley did not develop until after world war ii there were some early episodes that indicated something of the involvement of this area in the development of electronics.

A:
Although the high technology industrial complex known as The Silicon Valley did not develop until after World War II there were some early episodes that indicated something of the involvement of this area in the development of electronics.
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