cloud: visible mass of liquid droplets or frozen crystals suspended in the atmosphere

20th century: time period between January 1, 1901, and ended on December 31, 2000

São Paulo: most populous city in Brazil

transport: human-directed movement of things or people between locations

railway: interconnected network of infrastructure and vehicles used for train rail transport

train: form of rail transport consisting of a series of connected vehicles

cart: simple vehicle designed for transport, mostly uniaxial

carriage: generally horse-drawn means of transport

person: being that has certain capacities or attributes constituting personhood (avoid use with P31; use Q5 for humans)

railway station: railway facility where trains regularly stop to load or unload passengers and/or freight

sky: everything that is above the surface of a planet, typically the Earth

mode of transport: different ways of transportation such as air, water, and land transport

Luz Station: commuter train station in São Paulo