ISLAMABAD, PakistanMilitants attacked the Chinese consulate in the southern city of Karachi on Friday, killing two police officers, Pakistani authorities said, adding that Chinese diplomatic staff inside were unharmed. The attackers, armed with guns, grenades and at least one suicide jacket tried but failed to get inside, according to officials. Different officials described the number of attacks as between two and four. The assault started about 9.30 a.m. local time. ...
the assault ended at 9:30 a.m. local time
A: No

How to treat sexually transmitted diseases during pregnancy<br>Describe your symptoms. Consider if you have had any new sexual partners. If so, it is a good idea to get tested for stis just to be on the safe side.
Having new sexual partners can help treat sexually transmitted diseases.
A: No

In mathematics, an O*-algebra is an algebra of possibly unbounded operators defined on a dense subspace of a Hilbert space. The original examples were described by and , who studied some examples of O*-algebras, called Borchers algebras, arising from the Wightman axioms of quantum field theory. and began the systematic study of algebras of unbounded operators.
Unbounded operators are always positive integers.
A:
It's impossible to say