Please identify all date or time mentions and their types in the input sentence provided below.
Take into consideration the provided reference datetime, if relevant.
Pay attention to the provided example. You should output the results in JSON format, following a similar structure to the example result provided. 

Example sentence, reference datetime, and results:

<$1$>

Reference datetime: <$2$>

<$3$>

Considering the input sentence below, what is the output result?

<$4$>