Definition: In this task, you're given a question, along with a context passage. The passage will not have a direct answer to the question, but can include some information and a clue for the answer. Assuming you can only obtain information about one entity in the passage, your job is to determine whether information from the passage can be used to answer the question. Indicate your choice as `a` for Yes or `b` for No.
Input: Question: Which was built first, the Hemus motorway or the Sofia Northern Bypass motorway? Passage:From Botevgrad to Sofia, E79 joins Hemus motorway, designated A2. At the Bulgarian capital Sofia you have to enter the Ring Road, until Sofia Northern Bypass motorway is built. Signage is available. From Sofia to south there are of motorways (A6 Lyulin motorway and A3 Struma motorway) to Dupnitsa-north interchange. The Bulgarian Traffic law allows speeds up to on motorways unless otherwise stated. The road is leading from Dolna Dikanya to south, right to the Kulata-Promachonas. All the way to the Border Check point the road is of the standard 2-lane tarmac except for the section from the Pernik Province-Blagoevgrad Province border and the southern entrance to the city of Blagoevgrad where the road is of highway type and is long. The section between Dupnitsa and Blagoevgrad, 37 km long, has been upgraded to a motorway standard and opened to traffic 2015. Also the last of these sections - lot 4 from Sandanski-south to the Greek border of 13 km opened to traffic in August 2015. The stretch between Blagoevgrad and Sandanski - lot 3 - passes through the Kresna Gorge and is planned to feature a tunnel, which will be the longest motorway tunnel in Eastern Europe, whose construction will begin in 2015 and will cost app. EUR 650 mln.


b