With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: The French Open does not last two weeks.
text_B: The 20th Avenue NE Bridge -LRB- also known as the Ravenna Park Bridge -RRB- is a three-hinged , steel , lattice-arched bridge that spans a ravine in Seattle 's Ravenna Park .. Seattle. Seattle. Ravenna Park. Ravenna Park. It was designed by Frank M. Johnson under the direction of city engineer Arthur Dimock .. Built in 1913 , the structure is both listed in the National Register of Historic Places and is a designated city landmark .. National Register of Historic Places. National Register of Historic Places. city landmark. List of landmarks in Seattle. The structure is 354 ft long .. It has a 250 ft arch that rises 41 ft over the ravine .. It supports an 18 ft reinforced concrete roadway .. The road has been closed to vehicular traffic since 1975 , but it is accessible by pedestrians .
not_related.