Q: 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'.
Sentence 1: The mystery of Alexander the Great's tomb still has not unraveled, and locating the burial of Alexander seems to have become an impossible mission for archaeologists. Sentence 2: Alexander the Great's Tomb remains undiscovered.
A:
1