Resolves as YES if at least 7 major cities on Earth (of at least 10 million inhabitants each) have large-scale automated underground logistics networks before January 1st 2050.

In order to qualify, each network must include at least 250 nodes, and have a total length (take the sum of each underground point to point length between pairs of directly connected nodes) of at least 100km. A node is defined as a location where people can take or place packages into the network (on the surface, inside buildings, transport hubs...).

Only the automated sections of this network qualify. Each qualifying section must be able to transport packages of 10x10x10cm weighing 1kg at a speed of at least 1km/h in either direction.

A network of nodes is only considered to be a single entity if it is possible to send packages of the above description bidirectionally between at least 95% of every node-pair. If the automated network extends between multiple cities, then only the part of the network contained within one city is considered within the context of this question (must have at least 250 nodes of the "subnetwork" contained in the same city).