I ready finding main idea and details in informational texts

Which line from the text shows the problem with the first matches? a sudden gust of wind or a sudden shower would put it out. it could be lighted only by hard rubbing, and it sputtered and threw fire in all directions. it is called friction-chemical because it is made by mixing certain chemicals together and rubbing them. but the flame, however faithfully watched, would sometimes be extinguished.