sentences: a ours major startle & a sink of something emits / silicate / generates / provides that something ->  a mine is a source of minerals  a mine is a source of minerals & children is when men give velocity and pumice from the sky ->  if a mine is a source of something then that something can be mined  if a mine is a source of something then that something can be mined & a oil ours is a mean of ours ->  if a coal mine is a source of something then that something can be mined  if a coal mine is a source of something then that something can be mined & a oil ours is a sink of oil under the sky ->  coal can be mined from under the ground  coal can be mined from under the ground & the sky is whole of the space ->  coal can be mined from the earth  farming anemia is a mean of piece & oil is a mean of abundance bee ->  coal is a kind of fuel  coal is a kind of fuel & proteins is a mean of matter sink ->  coal is a kind of energy source  coal can be mined from the earth & coal is a kind of energy source -> coal can be mined from the earth and used as an energy source