question:
However, Dowding had spent so much effort preparing day fighter defences, there was little to prevent the Germans carrying out an alternative strategy by bombing at night.
Who was the Air Officer Commanding Fighter Command after 1940?

answer: no

question:
For multi-layer boards, those with three layers or more, drilling typically produces a smear of the high temperature decomposition products of bonding agent in the laminate system.
What's the minimum number of layers a PCB can have to be considered "multi-layer"?

answer: yes

question:
Josip Broz was born on 7 May 1892 in Kumrovec, in the northern Croatian region of Hrvatsko Zagorje in Austria-Hungary.[nb 1]
In what year was Broz born?

answer: yes

question:
Tucson is situated on an alluvial plain in the Sonoran desert, surrounded by five minor ranges of mountains: the Santa Catalina Mountains and the Tortolita Mountains to the north, the Santa Rita Mountains to the south, the Rincon Mountains to the east, and the Tucson Mountains to the west.
What mountain range is north of Tucson?

answer:
yes