Question:
For the four thousand a month who come to stay, approximately two thousand others pack up their belongings and head elsewhere, still searching for what brought them to Las Vegas in the first place.

Does it follow that "About one thousand a month come to Vegas to stay."?
Answer:
no

Question:
The El Rancho Vegas (1941) was the first, followed by the Last Frontier (1943).

Does it follow that "The Last Frontier was opened amidst the outbreak of war in the Pacific."?
Answer:
it is not possible to tell

Question:
Two thousand Soviet engineers arrived to help with the mammoth project to stem the annual floods that plagued the country, and provide hydroelectricity to power a growth in industry.

Does it follow that "Soviet engineers arrived to help with the mammoth project to stem the country's flooding problem."?
Answer:
yes

Question:
That was when Natalia burst back into the room.

Does it follow that "Natalia ran back into the room."?
Answer:
yes