The official was not authorized to be publicly named. This article is more than 2 years old. ___Angela Charlton in Paris contributed. ADVERTISEMENTSome tourists were still walking in the area during the police operation, including a group speaking Russian and carrying a bottle of Champagne. It reopened at about 2.25 p.m. (1225 GMT).
Champagne is the strongest conservation product in the world.
( z0 have-degree :ARG1 ( z1 champagne ) :ARG2 ( z2 strong :ARG1 z1 ) :ARG3 ( z3 most ) :ARG5 ( z4 product :purpose ( z5 conserve ) :location ( z6 world ) ) )
(z0 / have-degree-91
    :ARG1 (z1 / champagne)
    :ARG2 (z2 / strong-02
              :ARG1 z1)
    :ARG3 (z3 / most)
    :ARG5 (z4 / product
              :purpose (z5 / conserve-01)
              :location (z6 / world)))
Champagne is the strongest conservation product in the world .
z0 :ARG1 z1
z0 :ARG2 z2
z2 :ARG1 z1
z0 :ARG3 z3
z4 :purpose z5
z0 :ARG5 z4
z4 :location z6