question: this is a funny trick disguised as an iq test. you show your spectator a normal looking black ball and tell them that it tests the thrower's iq. so you throw it onto the ground, and it bounces over your head. then after this demonstration, pass it to a spectator.
Capitalize this past sentence correctly.
A: This is a funny trick disguised as an IQ test. You show your spectator a normal looking black ball and tell them that it tests the thrower's IQ. So you throw it onto the ground, and it bounces over your head. Then after this demonstration, pass it to a spectator.

question: you can get paid this lump sum once or get paid in instalments over many years to come.
Capitalize this past sentence correctly.
A: You can get paid this lump sum once or get paid in instalments over many years to come.

question: brillouin was friends with most of the top scientists of his day.
Capitalize this past sentence correctly.
A: Brillouin was friends with most of the top scientists of his day.