Question:
Nowadays, sadly, the custom of giving away the tapa is nonexistent, though the idea of selling snacks is stronger than ever.

Does it follow that "The custom of giving away the tapa still exists in some form."?
Answer:
no

Question:
i really like that

Does it follow that "I hate that a lot."?
Answer:
no

Question:
Before 1970, however, evaluation case studies were similar to research case studies.

Does it follow that "During 1970, evaluation case studies were similar to research case studies."?
Answer:
no

Question:
and that's relatively calm city

Does it follow that "And that is one of the most violent cities."?
Answer:
no