Using FreeMarker with Spring Boot

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To display his selfies taken on various trips, John Doe created the following template:

<#list trips as trip>
    <h2>${trip.destination}</h2>
    <#list trip.selfies as selfieUrl>
        <img src="${selfieUrl}">
    </#list>
</#list>

How many HTML elements will be produced by this template if John took 20 selfies during each of his 5 trips?

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