CONCEPTS: cloud, pass, skyscraper

GEN: time lapse close up of skyscrapers with clouds passing by

CONCEPTS: fireplace, room, turn

GEN: the use of tiles really turns this fireplace into an incredible feature of the living room .

CONCEPTS: angle, form, intersect, line

GEN: find the measures of angles formed by lines that intersect circles .

CONCEPTS: pitch, plate, softball

GEN:
A heavy woman pitches a very rapid softball towards home plate.