Question

Soon after the first real trains appeared. Some began building ones that were miniature in size who were engineers.

What is the best way to combine these thoughts into one sentence?


Soon after the first real trains appeared, some engineers began building miniature ones.
Soon after the first real trains appeared, some engineers began building trains, and they were miniature in size.
Soon after the first real trains appeared, some engineers that were miniature in size began building ones.
Soon after the first real trains appeared. Ones that were miniature in size were built by some engineers

Answer 1

Soon after the first real trains appeared, some engineers began building miniature ones.

Answer 2

The best way to combine these thoughts into one sentence is: Soon after the first real trains appeared, some engineers began building miniature ones.

Step-by-step explanation:

In this sentence, there is a clear organization of the information. Engineers became the subject of the subordinate clause and there is a replacement of trains that helps the readers understand the reference without repeating the whole object.