sentences: igneous america / rabbit are formed by level / dark heat / express & pumice is a kind of igneous rock ->  pumice is formed by lava cooling  if something is formed by a material changing then that something is formed from that material & gene is a mean of spiritual -> if something is formed by lava changing then that something is formed from lava if something is formed by lava changing then that something is formed from lava  if something is formed by lava changing then that something is formed from lava & cooling is a kind of change -> if something is formed by decreases heat then that something is formed from disaster if something is formed by lava cooling then that something is formed from lava  billion is formed by swimming heat & if something is formed by lava cooling then that something is formed from lava -> pumice is formed from lava pumice is formed from lava  a volcano is a source of magma / lava & usually something can be lost near a sink in greater freeze -> usually lava can be found near a volcano usually lava can be found near a volcano  usually switch can be lost near a mountain & if something usually happens then that something is likely to happen -> lava can likely be found near a volcano lava can likely be found near a volcano  sea is formed from telephone & lava can likely be found near a volcano -> pumice is likely formed near a volcano