Definition: In this task, you're given two sentences. Indicate if the first sentence clearly entails the second sentence (i.e., one can conclude the 2nd sentence by reading the 1st one). Indicate your answer with '1' if the first sentence entails the second sentence, otherwise answer with '0'.
Input: Sentence 1: Definitely do not lift the ban on ivory, it will drive the species to near extinction again. Elephant numbers should be controlled but what has ivory got to do with it? It is a barbaric trade and should be banned permanently. Sentence 2: The ban on ivory trade has been effective in protecting the elephant from extinction.

1