Add punctuation: In the early 1960s the evolution of the electric guitar and its components began influencing art
A: In the early 1960s, the evolution of the electric guitar and its components began influencing art.

Add punctuation: The wheel bore rotates onto the tube freely
A: The wheel bore rotates onto the tube freely.

Add punctuation: Enter the length of L2 in mm L2
A:
Enter the length of L2 in mm: L2