The magnetic force attracting nails made of iron was thought to be due to special conditions during the production process of the magnet.
(The magnetic force; attracting; nails made of iron) (nails; made; of iron) (The magnetic force attracting nails; to be; due to special conditions; T:during the production process of the magnet)
The magnetic force nails The magnetic force attracting nails
attracting made to be
nails made of iron
of iron
due to special conditions T:during the production process of the magnet