Resource key query for DataGrid translation

Hello

I'm working on a SfDataGrid, I did the translation as it is at https://help.syncfusion.com/wpf/datagrid/localization, but two items I don't know what is the translation key. Note that resource image has the key "SelectAll", which translating to Portuguese is "Selecionar todos". But I need the key to translate "True" and "False", according to the filter image of SfDataGrid. I looked for the key in the documentation and couldn't find it. Could you let me know?
Attachment: localization_2d46961c.rar

<syncfusion:GridCheckBoxColumn.FilterPopupStyle>                                    <Style TargetType="syncfusion:GridFilterControl">                                        <Setter Property="CheckboxFilterStyle">                                            <Setter.Value>                                                <StyleTargetType="syncfusion:CheckboxFilterControl">                                                    <Setter Property="Background"Value="Red"/>                                                    <Setter Property="ItemTemplate">                                                        <Setter.Value>                                                            <DataTemplate>                                                                <CheckBox Margin="4"                HorizontalAlignment="Stretch"                HorizontalContentAlignment="Stretch"                Focusable="False"                Content="{Binding Converter={StaticResource boolConverter}}"                          FontWeight="{Binding FontWeight,RelativeSource={RelativeSource Self}}"                Foreground="{Binding Foreground,RelativeSource={RelativeSource Self}}"                IsChecked="{Binding IsSelected,                                    Mode=TwoWay}">                                                                </CheckBox>                                                            </DataTemplate>                                                        </Setter.Value>                                                    </Setter>                                                </Style>                                            </Setter.Value>                                        </Setter>                                    </Style>                                </syncfusion:GridCheckBoxColumn.FilterPopupStyle>                public class BoolConverter : IValueConverter    {        public object Convert(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)        {            if ((value as FilterElement).DisplayText == "True")                return "Yes";            else                return "No";                    }            public object ConvertBack(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)        {            return null;        }    }