user: Based on the reference text, what was the start date and the expected completion date of the reconstruction project on the Howard Frankland bridge.

assistant: The reconstruction project of the Howard Frankland bridge started in fall of 2020 and is expected to be completed in 2025.

user: How long did it take for ironworking to be commonplace in West Africa following its introduction in Northern Africa?

assistant: Ironworking was introduced in Northern Africa around the first millennium BCE and became commonplace in West Africa by 500 BCE. This means it took 500 years (1000-500) for ironworking to become common in West Africa following its introduction in Northern Africa.

user: What side of the road do pedestrians walk on?

assistant: In India, the cars and vehicles keep left and pedestrians are encouraged to walk on the right. This is so the pedestrians can see oncoming traffic.  In the USA, all traffic, vehicles and pedestrian, usually stick to the right.