Please help me with where I have question marks.

S&L Financial buys and sells securities expecting to earn profits on short-term differences in price. On December 27, 2018, S&L purchased Coca-Cola bonds at par for $886,000 and sold the bonds on January 3, 2019, for $892,500. At December 31, the bonds had a fair value of $882,000. Prepare journal entries to record (a) any unrealized gains or losses occurring in 2018 and (b) the sale of the bonds in 2019. (If no entry is required for a transaction/event, select "No journal entry required" in the first account field.)

Answer is complete but not entirely correct.

No	Date	General Journal	Debit	Credit
1	December 31, 2018	Unrealized holding lossNI	4,000
1		Fair value adjustment		4,000
2	January 03, 2019	Fair value adjustment	????	?
2		Unrealized holding gainNI		?????
3	January 03, 2019	Cash	892,500
3		Investment in Coca-Cola bonds		886,000
3		?????????????????????		6,500