question:
White legislators passed laws prohibiting marriage between European and Asian Americans until the 1950s.
When did laws stop banning marriage between whites and asians?

answer: yes

question:
In 1989, Nintendo released an official NES Cleaning Kit to help users clean malfunctioning cartridges and consoles.
When did Nintendo release a cleaning kit?

answer: yes

question:
In suffix pairs, a different infinitive ending is added to the perfective stem; for example, the perfective verbs koupit (to buy) and prodat (to sell) have the imperfective forms kupovat and prodavat.
What does a perfective verb have added in prefix pairs?

answer: no

question:
Victoria may have suffered from post-natal depression after many of her pregnancies.
Hysteria and loss of control after the birts of many of her children were likely caused by what?

answer:
yes