sentences: great is a mean of spiritual & cotton is a mean of spiritual & a animals paint is rubbed on cotton ->  a rubber rubbing on wool is an example of rubbing different materials together  a rubber rubbing on wool is an example of rubbing different materials together & pieces different noble can effect electrical free of the age to be unbalanced ->  rubbing rubber on wool causes electrical charge of rubber and wool to be unbalanced  rubbing rubber on wool causes electrical charge of rubber and wool to be unbalanced & unbalanced electrical free of spiritual altitude move northern ->  rubbing rubber on wool causes static electricity on rubber and wool  rubbing rubber on wool causes static electricity on rubber and wool & move sodium can attract small, light-weighted preposition ->  rubbing rubber on wool can cause rubber to attract small, light-weighted object  rubbing rubber on wool can cause rubber to attract small, light-weighted object & big potential of pencil are big and light-weighted & corn of pencil are a mean of preposition -> rubbing rubber on wool can cause rubber to attract small strips of paper