The Chattenden and Upnor Railway (later known as the Lodge Hill and Upnor Railway) was a narrow gauge railway serving the military barracks and depot at Upnor and associated munitions and training depots. It was built in 1873 as a gauge railway, converted to narrow gauge around 1885, and continued in use until 1961.
The Chattenden and Upnor Railway was built more than 5000 days ago.
Can we draw the following hypothesis from the context? 

Context:

The Chattenden and Upnor Railway (later known as the Lodge Hill and Upnor Railway) was a narrow gauge railway serving the military barracks and depot at Upnor and associated munitions and training depots. It was built in 1873 as a gauge railway, converted to narrow gauge around 1885, and continued in use until 1961.

Hypothesis: The Chattenden and Upnor Railway was built more than 5000 days ago.n
Options: 

 - yes

 - it is not possible to tell

 - no
yes
Can we draw the following hypothesis from the context? 

Context:

The Chattenden and Upnor Railway (later known as the Lodge Hill and Upnor Railway) was a narrow gauge railway serving the military barracks and depot at Upnor and associated munitions and training depots. It was built in 1873 as a gauge railway, converted to narrow gauge around 1885, and continued in use until 1961.

Hypothesis: The Chattenden and Upnor Railway was built more than 5000 days ago.n
Options: 

 - yes

 - it is not possible to tell

 - no
user
yes
assistant