Complex sentence: For example, Mars aspects the 4th, 7th and 8th house from its position, and its 8th house aspect is considered more powerful than 7th aspect, which in turn is more powerful than its 4th aspect.
Split into simpler sentences: For example, Mars aspects the 4th, 7th and 8th house from its position. It's 8th house aspect is considered more powerful than 7th aspect, which in turn is more powerful than it's 4th aspect.