Remove consecutive duplicate words from a file using awk or sed

Question

My input file looks like below:

“true true, rohith Rohith;
cold burn, and fact and fact good good?”

Output shoud look like:

Answer 1

Simple sed:

echo "true true, rohith Rohith;
cold burn, and fact and fact good good?" | sed -r 's/(\w+) (\1)/\1/g'