Complex sentence: The Grammy Award for Best Solo Rock Vocal Performance was given out only in 1988,1992, and 1994, in lieu of the Best Male Rock Vocal Performance and Best Female Rock Vocal Performance.
Split into simpler sentences: The Grammy Award for Best Rock Vocal Performance, Solo was presented in 1988,1992, and 1994. For these years the award replaced the awards for Best Male Rock Vocal Performance and Best Female Rock Vocal Performance.