Asia
There's no continent there. That point is in the Indian Ocean, about 80 miles east of the coast of Madagascar. The nearest continent is Africa, but I wouldn't want to have to swim it.
The coordinates 50 degrees north by 22 degrees east are located in Europe. Specifically, this point is near the eastern part of Poland. The region is characterized by a mix of agricultural land and forests, typical of the Central European landscape.
One continent cannot be 20 degrees west and 50 degrees east, because west and east are opposite each other and separated by the Prime Meridian, but the continent of Aisa can be found at 50 degrees east. There is no continent located at 20 degrees west.
That point is in Iran, about 25 miles north-northeast of Qom and 50 miles south-southwest of Tehran.
Antarctica
That point is in the open ocean, about 1,050 miles south of the southernmost point in Africa, and almost 1,400 miles north of the Antarctic coast.
No, 50 degrees NE is not equal to N 50 degrees E. "50 degrees NE" typically refers to a direction that is halfway between north and east, specifically at a 50-degree angle from the north towards the east. In contrast, "N 50 degrees E" indicates a direction starting from north and then moving 50 degrees toward the east, which is a more eastern direction than 50 degrees NE.
The island located at 50 degrees north and 142 degrees east is Hokkaido, the northernmost island of Japan.
Poland
Iran
Kazakhstan