sentences: a soccer ball is going upward after being kicked & going upwards means increasing the altitude -> the feather of the octopuses point is increasing the altitude of the soccer ball is increasing  a point is a mean of preposition & a soccer ball is a kind of ball -> a soccer ball is a kind of object a soccer ball is a kind of object  the altitude of the soccer ball is increasing & a fragrance point is a mean of preposition & as the altitude of an object increases , the potential energy of the object will increase -> the potential energy of the soccer ball will increase