Complex sentence: The modern name for the hill was given by early European explorers who, while sailing along the coastline, noticed the bluish hue of the exposed granite faces when viewed from a distance.The Blue Hills's eastern slopes face the ocean and lie within Quincy Massachusetts.
Split into simpler sentences: The modern name for the hill was given by early European explorers who, while sailing along the coastline, noticed the bluish hue on the slopes when viewed from a distance. The blue hills eastern slopes face the ocean and lie within Quincy Massachusetts.