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'.

Example Input: Sentence 1: Preliminary tests identified the source of the outbreak as the highly contagious norovirus, which had struck several guests just before they boarded the cruise Nov. 3 in Rome, Carnival officials said. Sentence 2: Norovirus is the source of the outbreak on the ship.
Example Output: 1

Example Input: Sentence 1: The new Interstate 35W St. Anthony Falls Bridge in Minneapolis, Minnesota, United States was opened shortly after 5 AM today. It replaces a bridge which collapsed last year, killing 13 people. A fire engine and ambulance were first across on each side. In each direction, a line of State Highway Patrol cars was followed by a formation of Department of Transportation construction trucks. A cluster of awaiting vehicles went honking across for a few minutes, then traffic returned to the sparse levels more typical of the pre-dawn period. The September 18 opening was well ahead of the scheduled December 24 goal, earning the contractor, Flatiron-Manson, up to $19.6 million in performance bonuses. The bridge is 189 feet wide, with a main span length of 504 feet and a deck height of over 100 feet above the Mississippi River. Sentence 2: Interstate 35W St. Anthony Falls Bridge crosses the Mississippi River.
Example Output: 1

Example Input: Sentence 1: World health officials warned yesterday that West Africa and Central Africa were on the verge of the worst polio outbreak in years, stemming from the refusal of a single state in northern Nigeria to vaccinate children against the disease. Sentence 2: African polio outbreak feared
Example Output:
1