Go to market does not have a sub-event of take your medicine. Read has a sub-event of listen to music. Go to market does not have a sub-event of get sore and tire foot. Study has a sub-event of listen to music. Go to market has a sub-event of travel. Listen to music has a sub-event of relaxation. Travel has a precondition of buy ticket. Tell joke has a sub-event of use wit. Tell joke does not have a sub-event of relaxation. Groom has a sub-event of use wit. Travel has a sub-event of read.
Go to market does not have a sub-event of read.